I like this team. It has a good amount of diversity( power wise and background). Would you have any stories or villans/enemies you would see this team go up against?
Not a villain per se, but I loved the Gambit arc w/ Pete Wisdom. Other than him, this team trying to steal something from SHIELD and/or SWORD headquarters would be awesome.
As for pure villains... since Gambit is the lead, you have to throw Sinister in there. Then probably Atlantis, AIM, The Hand (Shadowland), Assassin's Guild, Thieves Guild (the irony), Avengers Tower, New Xavier's School, JGS, etc - they'd hit everything.
@mcklayn: I didn't say powers shouldn't be a must, I just said they shouldn't be the only thing that is brought to the table. Lifeguard's ability to instantly adapt to any situation IMO is worth the risk of losing stealth. If her power works the way I think it does, then her ability will actually help keep her under wraps. Worst comes to worst, she on the Panic Button Squad along w/ Frenzy.
While Pixie would stand out, she still has her dust to confuse and manipulate those around her. Not to mention Longshot, Psylocke and Bedlam are able play w/ people's minds as well. Admittedly, she could be replaced by Blink or Slipstream... probably a better fit.
I seriously, seriously, seriously considered Prodigy, but I figured him in addition to Fence and Sage would be a much for the technical side of the team.
I stayed away from Domino just for a change. Everyone expects Domino on a team like this, so I went with Longshot instead. Besides, the roster was getting a bit female heavy. This could've easily been named Gambit's Angels in it's original configuration.