What would be your ideal X-lineup, what would you call your team? Pick, mix and match, from anyone who could concieveably be an XMan (use common sense, i.e. Shadow King, will never join a Xteam and be a good guy). Let's see what 5 to 8 you would throw on a team and why, or just maybe a list with whoever you think would make a good field leader.
Mine are the Underground X-Men
My group would be more for covert op's, the stuff no one is supposed to know about. Kind of like the Mystique series.
Bishop- Field leader. He's Bishop, he's a bad@$$, he's got training on how to take down almost any mutant, and he seems to thrive on the detective elements, so the cloak and dagger stuff might be right up his alley.
Mystique- Undercover. She's the perfect undercover agent. She can look like anyone, and she has no real morals, or inhibitions, no matter the job she'll get it done.
Deadpool- Enforcer. Too unpredictable to try and have him do the undercover work, but his image inducer would help him to certain degrees. He used to be one of the definitive bad@$$' of the MU and he could be again. He would be usefull for stealth work and intimidation. He's not a mutant, but he's got one's healing factor, plus neither was Mimic. Oh and he fills out a Marvel Girl outfit like it's no one's business.
Shortpack- Communications. Not much use if they have to fight, but he can coordinate Bishop's commands telepathically to the others, and he can get in and out of some places undetected, so you can have multiple agents in one environment.
AgentZero/Maverick- Agent. He may or may not have powers (it's still kind of up in the air who's got powers and who doesn't, his name has been shown on those who don't but I think if they wrote a good story for him he'd show up.) but he's still got the experience. Having been ex-C.I.A. he's been around the block a time or two and is quick both physically and mentally on his feet.
Sage- Intelligence. I would have thrown in Layla Miller here, but Sage while she doesn't have the near "precognicance" that Layla does she still has the ability to intuit situations, plus she can handle herself as another agent.
Shadowcat- Agent. She's had training from Wolvie, she's incredibly smart, and there's not many places she can't get in to. Those attributes plus how small she is means her opponents would underestemate her, and her plain looks wouldn't stir up anyone's attention on a covert mission.
They would handle the shadow stuff, arms deals, mutant experiments, MGH trafficing, or just blowing sentinel factories up, doing the greater good even though the work is nasty etc...