I believe that rogues in 2v2 have a variety of viable combinations. Before entering into a debate on what partner you should chose though, I want to note that in my opinion, coordination and synergy between yourself and your partner is more, if not the most, important to gaining a winning result.

When you start playing with a new partner, I firmly believe that there is an "adaptation" process where you must first learn to combine your different play styles into one cohesive strategy. Allow me to use an example with Rogues; One Rogue might be a very "aggressive" player and charge out in hopes to get the jump on a target before they get "set up" or perhaps catch an enemy stealther off guard and get the opener. Another Rogue might have a more defensive play style and prefer to wait it out a little bit and perhaps capitalize on your opposing team getting impatient by catching an enemy player in the wrong location at the wrong time.

While both of these forms of "rogue play styles" can and does work very effectively if executed correctly, they carry a requirement of significantly different expectations to their team mates' approach and play style.

This kind of adaptation and team synergy carries over to every team composition, albeit arguably some more than others. Coordinating crowd controls, offensive bursts and positioning in the arena are the keys to functioning successfully as a team.

Personally, when doing arenas, I prefer to discuss with my partner possible matchups and what kind of "game plan" we should execute prior to entering. Then, later, if we encounter a setup or set of plays that left us with a loss, we often sit back and think/talk about what went wrong and what we can do to counter what just happened to us.

That being said;

For 2v2s as a Rogue I believe some of the most common setups are as follows:

Rogue/Restoration Druid
Combining the mobility and control of a Rogue with the survivability and utility of of a restoration Druid, this composition can be very effective while executed correctly. Between Cyclone, Sap, Blind, Roots and feral abilities on the druid's account such as feral charge and bash, a well coordinated set of plays can present your opponents with a tough choice; trinket a Blind in order to heal while risking getting charged/bashed, or eat the blind and hope their partner can stay alive by own merits for the duration of the CC.

Rogue/Discipline Priest
What discipline priests lack in terms of mobility, they make up for in terms of utility and synergy with a Rogue partner. Fears, mana burns, instant heals/shields and both offensive and defensive dispels couple very well with a Rogue's control abilities. A well executed priest fear on an opposing healer while their partner is low health (fear gets trinketed) followed by a Blind by the rogue and subsequently an optional Vanish->Sap can leave the lowhealth target without heals for a healthy duration allowing an opportunity to finish him off.

Rogue/Warlock
This team relies on the tactic "kill before being killed". Between the utilities and CC's of both classes and improved stealth detection from the warlocks felhunter, this combination allows the rogue to very often get the opener on a stealthed target. Add a warlock's survivability to the mix while executing some well timed CC combinations (fear->blind->vanish/sap), this formation is considered one of the most potent "double dps" 2v2 teams.

Rogue/Mage
Similiar to a Rogue/Warlock setup in the sense that this is a 2dps team requiring a quick kill, both classes have an arsenal of CC and survival abilities if they get jumped. The spike damage of a Mage "Shatter Combo" and a Rogue stunlock with damage, this composition can be particularly lethal if the crit numbers are high.

Rogue/Rogue
Also a popular 2dps formation currently, this team composition relies mostly on one thing; Getting the opener on your opponents and controling the fight. If either of the two rogues gets jumped/cc'ed off the bat, it can be hard to recover and pull of a win. Coordinating stuns and CC's is also an important part of this team's strengths. An example is having one Rogue unload a 5pt Kidney in anticipation that the target will trinket while the second rogue holds back ready to re-apply (albeit diminished duration) second stun. Coordinating interupts is also key to this combination.

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I am sure that there are other setups that can be effective, but I will leave the elaboration on those up to other players. Again, I would like to reiterate my opinion that the most important points to being successful in the arenas is communication, team synergy and executing a plan together.

While Season 3 is still going strong, we wanted to announce ahead of time the rating requirements that will be present for arena items once Season 4 begins. We also wanted to give everyone a heads up to some changes that will be in an upcoming patch, altering how points are gained and players are matched in the arena system. The patch with these changes is scheduled to release before the start of Season 4.

First though, the rating requirement changes:

When Season 4 begins, Season 3 items will be reduced in personal and team arena rating requirement to:
Shoulders: 1950
Weapon: 1800

The new Season 4 items will have the below personal and team arena rating requirements:
Shoulders: 2200
Weapon: 2050
Head: 1700
Chest: 1600
Legs: 1550
Gloves: none
Off-hand: none

In addition, some of the Season 4 quality items that will be purchasable with honor will also carry a personal and team arena rating requirement:
Boots: 1700
Ring: 1650
Bracers: 1575
Belt: none
Necklace: none
Trinket: none

The Season 2 items, which will move to the honor system when Season 4 begins, will continue to have no rating requirement.

The changes to the rating requirements for these items reflect the nature of the items, their power, and the relative difficulty that should be had when attempting to obtain them. These items are comparable to those found in the newest 25 person raid zone, Sunwell Plateau, and should therefore also feel very challenging to obtain.

To help ensure that the challenge in obtaining these items stays true to those achieving these ratings, we'll also be implementing new rules with an upcoming patch to curb practices that undermine the core concepts of the arena system. These rules are as follows:

• If a character’s personal rating is more than 150 points below the team rating, they will earn points based on their personal rating instead of the team rating.

This means that a player cannot join a highly rated team and begin earning points based purely on the pre-established rating of the team before they joined it. They'll need to compete, improve, and gain a personal rating worthy of the points they would receive.

• If the average personal rating of the players queuing for a game is more than 150 points below the team’s rating, the team will be queued against an opponent matching or similar to the average personal rating.

This means that players cannot join a highly rated team and immediately face highly rated opponents, easily and quickly bringing their personal rating up. Instead they'll need to again compete, improve, and earn their rating.

We're excited to see these changes implemented, which will continue to emphasize the strong competitive nature of the arenas, and the challenge in obtaining the highest end rewards available for PvP.

(Source)

While Season 3 is still going strong, we wanted to announce ahead of time the rating requirements that will be present for arena items once Season 4 begins. We also wanted to give everyone a heads up to some changes that will be in an upcoming patch, altering how points are gained and players are matched in the arena system. The patch with these changes is scheduled to release before the start of Season 4.

First though, the rating requirement changes:

When Season 4 begins, Season 3 items will be reduced in personal and team arena rating requirement to:

Shoulders: 1950
Weapon: 1800

The new Season 4 items will have the below personal and team arena rating requirements:

Shoulders: 2200
Weapon: 2050
Head: 1700
Chest: 1600
Legs: 1550
Gloves: none
Off-hand: none

In addition, some of the Season 4 quality items that will be purchasable with honor will also carry a personal and team arena rating requirement:

Boots: 1700
Ring: 1650
Bracers: 1575
Belt: none
Necklace: none
Trinket: none

The Season 2 items, which will move to the honor system when Season 4 begins, will continue to have no rating requirement.

The changes to the rating requirements for these items reflect the nature of the items, their power, and the relative difficulty that should be had when attempting to obtain them. These items are comparable to those found in the newest 25 person raid zone, Sunwell Plateau, and should therefore also feel very challenging to obtain.

To help ensure that the challenge in obtaining these items stays true to those achieving these ratings, we'll also be implementing new rules with an upcoming patch to curb practices that undermine the core concepts of the arena system. These rules are as follows:

If a character’s personal rating is more than 150 points below the team rating, they will earn points based on their personal rating instead of the team rating.

This means that a player cannot join a highly rated team and begin earning points based purely on the pre-established rating of the team before they joined it. They'll need to compete, improve, and gain a personal rating worthy of the points they would receive.

If the average personal rating of the players queuing for a game is more than 150 points below the team’s rating, the team will be queued against an opponent matching or similar to the average personal rating.

This means that players cannot join a highly rated team and immediately face highly rated opponents, easily and quickly bringing their personal rating up. Instead they'll need to again compete, improve, and earn their rating.

We're excited to see these changes implemented, which will continue to emphasize the strong competitive nature of the arenas, and the challenge in obtaining the highest end rewards available for PvP.

GameSpy:   So let's talk about the Arena Tournament, and what it means for World of Warcraft.
Tom Chilton: The big objective is to build WoW into a viable eSports game platform.

GameSpy: Arenas definitely turn WoW into more of a competitive game, but the Arena Tournament realm has a wildly different approach from the live realms. Do you feel that players will want to have this kind of approach available at all times?
Tom Chilton: We don't really intend for the Arena Tournament realm to replace WoW. We do feel like the arena games are a game within the game, a meta-game of WoW. We don't necessarily want people to feel like WoW is no longer a game to them. Also, within that, it kind of makes sense to structure the tournaments in a way we're doing. They're not something we can run all the time, so we've broken them into this seasonal concept, allowing us to pace how often we have them, and to make sure that they're as well-supported as we can support them.

GameSpy:  Have you looked internally at the distribution of players doing arenas on the live realm, separating those who are playing competitively with those selling teams or just tanking games to get gear?
Tom Chilton:  We don't really have any way of knowing that. We can't distinguish what the intent of a given player is, whether they consider themselves to be competitive or whether they're just doing it for the gear or whatever. Certainly as far as players who are trying to exploit the system through loopholes, we have some changes coming in a patch just a few weeks away where we'll close a lot of those loopholes.
GameSpy: Are you able to talk about those changes yet?
Tom Chilton: Not just yet.
GameSpy: But we can expect the changes will be targeted at the point-selling teams.
Tom Chilton:  Point selling, personal rating selling.
GameSpy: The two big things that players seem like they're against are the point-selling teams, since you can face highly skilled and geared players at even the low ratings, and those who bring alts or friends on a team to tank a team so that they can then get a high personal rating on the real team.
Tom Chilton:  Exactly, that's what we'll be addressing.

GameSpy:  How did you go from way back in the days when you didn't believe that World of Warcraft could ever be a competitive eSports type game to now, when you have an eSports team on board?
Tom Chilton:  I'll tell you, it's been a slow evolution. When WoW first came out, we didn't really have any semblance of organized PvP. We had Tarren Mill versus Southshore...
GameSpy: Which was awesome!
Tom Chilton: That's nostalgia speaking!

GameSpy:  Has shifting WoW over to a game with a full-fledged arena system for competitive players heavily influenced development in other aspects of the game? Making sure that classes and talents remain arena viable?
Tom Chilton: Sure, we call it the Arena magnifying glass. There's definitely more emphasis now on class balance. It puts everything under the microscope. Even what would ordinarily be considered extremely small balance differences really look big under the arena microscope. It's definitely influenced us in terms of the things we have to do so that players feel that it's a strong and balanced environment.
    At the same time, WoW isn't just an arena game. We always have to play that against what the implications are for the rest of the game. To make sure that nothing that we do isn't making the rest of the game not fun. All aspects of the game are now tied together. Inevitably, changes that we make don't influence PvP alone, and don't influence PvE alone, so we're very cognizant of that every time that we make a change.

GameSpy: When "small" balance changes come about to fix arenas, like the recent Druid Lifebloom change, how do you handle it interfering with raid balancing and soloing? Are you ever forced to change the conditions of the world to reflect an arena change?
Tom Chilton: We do a little bit of that, where sometimes we'll change something for the sake of class balance with some kind of change to a PvE encounter as necessary. Like retune them or change the dynamics of the spells or abilities. We try to avoid having to do that, and our general tactic that we take is that if we're going to make a change that negatively impacts PvE, we try not to, and offset it in some other way.
    One example would be the Lifebloom change. Rather than hitting the periodic heal effect of Lifebloom, we ended up changing the backend part of it, the actual bloom, which really doesn't have as significant an impact in PvE.
    We try to make sure that we isolate the changes as much as we reasonably can, and at the same time, with each patch, we're all often looking for ways to retune and improve PvE through our PvP balance changes.
    An example would be that recently, more because of PvP, all mages got access to Ice Block. Not only do all Fire mages have Ice Block as a survivability mechanism, etc., we've also replaced that talent slot with Icy Veins. We knew that this was an ability that was also useful for PvE. It opened up a different build. Prior to Icy Veins, you generally saw all raiding mages going deep fire and spec some in arcane. But that opened up a Frost mix with Fire as a viable raiding spec. And that's had really positive effects on PvE balance.

GameSpy: Have you had similar balance issues with the battlegrounds as opposed to arenas?
Tom Chilton: Definitely, they're very different PvP experiences. The PvP balance feels different between arenas and battlegrounds, but also between 2v2, 3v3, 5v5. Class synergies come into play more in the smaller environments. There are certain classes that feel like they're extremely strong in battlegrounds, but are either harder to play or are just not as good in some arena formats.
    A good example is the Hunter class. If you're playing a Hunter in a battleground, you generally feel they're a very strong class. Arguably one of the stronger battleground classes in the game. But they're extremely skill-sensitive in the arena environment because of the line of sight issues, that sort of thing. We find that the very skilled players can play Hunters well in the arenas, but I think it's fair to say that it may take a higher level of player skill to achieve the same kind of result in the smaller arena environment.

GameSpy: Do you feel that you have a good grasp of what group compositions are like in the arena formats, and that balancing is about where it should be? Should Druid healers continue to be retooled for the smaller formats?
Tom Chilton: There's more balancing that we can do. Balance changes tend to take a very long time to play out, and to realize the full effects. So we'll make a change in the game, and players have the expectation that there will be immediate results. Suddenly X class is now performing far better in the arenas than it used to be. Usually if you see those immediate results, we've swung the pendulum way too far. It means that three months later, six months later, that class will be completely dominating the arena. So we're kind of always struggling with that knowledge that when we make changes, we have to be subtle, where we can, and be patient to let those changes shake out.
    We're looking forward to the arena tournament environment to give our most competitive players a chance to try out those changes. There's a lot of inertia that the players have right now with the prevailing builds and the strong group make ups, that sort of thing. When we make changes, it's not always easy for them to adjust and try new things.

GameSpy: How satisfied are you with the layouts and physical setups of the current three arenas? And do you plan to create new arenas with environmental hazards or other forms of variety?
Tom Chilton: The arena environment can use more locations. We'll probably get a little more bold with some of those, and in some areas we may even simplify. For example, when we introduced Ruins of Lordaeron, it was geometrically more simple than the Blade's Edge arena. There are fewer line-of-sight obstacles than Blade's Edge. It was in a lot of ways a product of what we really liked about Nagrand arena and Blade's Edge, and trying to use that to make an arena that we felt a lot of classes would be happy with. We'll probably try some new things, we'll add some new arenas for Wrath of the Lich King. Some may be a bit different from what we've seen so far.

GameSpy: Hindsight being 20/20, do you feel that Resilience as a gear mechanic was a good way to separate PvE and PvP gear, and that it accomplished its objective?
Tom Chilton: It certainly accomplished its objective. I would make a note that its primary objective wasn't to separate PvE from PvP gear. Its primary objective was to make people not explode so quickly. Before The Burning Crusade came out, when people were running around in their high-end raid gear, which was very DPS optimized, it felt like it was turning the PvP environment into something not fun. When you were playing against high-end players, you just couldn't stay alive. You'd get into an encounter and then, "Bam! Bam! Bam!" People would be dropping dead right and left.
    That was the primary goal for resilience, to make sure that the fight times in PvP were long enough that the crit results weren't streaky enough that it was too random number generator-driven, or that you just didn't have enough time to play your class. It accomplished that, and I think a secondary benefit was that you could more clearly distinguish what kind of activities you were doing. There's PvP gear, PvE gear, and you could kind of feel different from each other. It almost did that too much, in that it has in a lot of ways provided a pretty big barrier to cross-over gameplay.
    We definitely want to encourage players as much as possible to experience as much WoW as they can, so it really behooves us to make sure that there's some kind of crossover, where you can take your PvE gear to PvP, and your PvP gear to PvE. It's there that we felt that the crossover was weakest. It's not that we really want to change the stats on the PvE gear, we just want to make sure that PvE players have access to some reasonable level of resilience so that they can do arenas and have a fun experience without just blowing up.