Fun idea. Here's my team:
All-new Cyclops (the rookie and connection to the Starjammers)
Cannonball (team leader)
Sunspot (just tagging along)
Smasher (Imperial Guard member, she'd be pretty important)
Warbird (team needs a wildcard..)
Lila Cheney (because she's awesome and is Sam's ex and needs to interact with Smasher)
Rachel as Phoenix (because she needs to become Phoenix again and kick some ass)