So I've been playing a lot lately, and my only real complaint is the lack of any sort of browser-server. I wish I could play more easily with groups of friends, but the way the game handles multiplayer matchmaking leaves a lot to be desired.
Also, I've noticed the teams don't rebalance at all after a match. Case in point, I played a lot of Fighter Squadron last night, and the villains won every match. Why? The same top six players were on their team every single match. Teams just swapped sides without balancing them out after the match.
With all that said, the game is still a lot of fun. I just need a better gun (I just hit rank 10).