Classic Avengers, of course - the Classic versions of Iron Man, Thor, Cap and Black Panther. (This was my first play through team)
Since playing through again, My Fav Teams to play now are...
-New avengers - Iron Man, Spiderwoman, Wolverine, (w/ Cap, Iron Spidey, Luke Cage, Ms. Marvel)
-Against the HAND - Daredevil, Electra, Logan, w/ Moon Knight
Teams I'm looking forward to playing, or would love to play, are...
-Agents of Shield - Nick Fury, Black Widow, Agent Jessica Drew, Logan (or a Guardsman skin on IM)
-Ultimates - Ultimate versions of Thor , Cap, Hawkeye, Iron Man, (Does Black Widow have an ultimate skin? I have yet to install the PSP content... won't until I unlock all the skins officially. SO dan't acytually have Hawky and BW in there yet)
-Omega Flight - USAgent, Aracne, Beta Ray Thor, and (we definitely need a skin for) Sasquatch
-Classic Defenders - Hulk, Dr. Strange, Silver Surfer, and (we also need a functioning) Namor
-Classic Invaders - WW II Cap, Human Torch, (again, we need) Namor, and the Whizzer (as a skin for Quicksilver) or Winter soldier for Bucky.
- Illuminati - Iron Man, Reed Richards, (again... see why we need him?) Namor, (and a port of) Black Bolt or Professor X
We seem to be just a character away from some amazing teams... so, so close.