[Goldeye]

Triple Play would be impossible with only two teams. In some cases, a game will be too simple if made for a 2v2. Triple Play was probably a pretty decent median. Their wasn't really crowding on the field, and although there was a lot of action making it hard to follow each action in the game, the fact that there's only two teams made it easy to tell the current game status in a few glances.

The best answer is variety. If they can make a game where two robots are needed to accomplish a difficult task on a very large field, even 4v4 could be reasonable (with serpentine alliance picking). I'm sure they can make a great 2v2v2 game too. Whatever they come up with, I'm sure it'll be good.