She Hulk and Skaar in an Agents of SMASH playset?
You've already got Hulk, the current edition of Disney Infinity Marvel appears to be set around the animated shows namely Avengers Assemble (and NOT the Iron Man and Friends show!), Ultimate Spiderman and if the crossover characters are because they've appeared in the other series then those 2 remaining Marvel characters could easily be part of another playset as the GOTG and Spiderman Playsets come with 2 figures each.
If it is another playset that just leaves Hulk and the Agents of SMASH and well with everyone up in arms about the lack of female characters what better choice would there be than She Hulk?
I figure Skaar because I can see A Bomb and Red Hulk being team up discs if not mission givers and their villain is usually the Leader but then they have Modok working with Loki and Mysterio and Doctor Octopus working with the Green Goblin so if they're all connected then they can have Spiderman and Iron Man crossover into theirs and since Skaar isn't from Earth have him show up in GOTG (okay thats a maybe...)... well its an idea!