I actually went to sleep contemplating this last night! It didn't help that I kept thinking about Sigma 6 and America's Elite as small Joe-teams supposedly able to handle any situation. In any case, here's what I came up with:
I based it on trying to create a team suited to fighting modern terrorism around the world.
Mirage: Heavy weapons, Artillery
Cover Girl: Armor, Mechanics, and DDP had her train up to be qualified in Intelligence, too
Shipwreck: Naval specialist, and since the 90s, SEAL
Airtight: HazMat (& Ordnance)
Hacker: Computer Tech and Telecommunications
Claymore: Team leader; Anti-Terrorism specialist, international intelligence, legendary soldier
Snake Eyes: Ninja Commando Super-Hero
Stalker: Second-in-Command; filecards show Ranger, EOD, Medic, Interpreter, Cold Weather & Desert ops, Infantry
Barrel Roll: Marksman/Sniper and Pilot
Super Trooper: ultimate Infantry and Covert ops soldier
I think this team is ready for most situations!