Captain America (leader)- there is no other when it comes to the iconic leaders in comics
Hawkeye (no powers)- a great personality, as well as always cool visuals
Beast (brains/science)- always plays the role of the brains wherever he is, but he is also the heart of whatever team he is on
Red Hulk (powerhouse)- I just like having him around, and adds a bit of new flavor
Quicksilver (speed/*****ebaggery)- always good to have a speedster around. Add in his up and down past, he may be a good character
Ok, now this last one is what really may get me flamed...
Kitty Pryde (required female)- there is bound to be some big shake-up after AvX. I say put her on the team. Under a new creative team, she can once again play the eyes and ears of the reader, being introduced to the new team/series as an outsider. Plus; she is just a great character.
Reserves:
Iron Man- I love him, but for some reason I like him more on his own than as an Avenger. Just bring him in when necessary.
Spider-Man- one of my all time favorite characters, but I prefer him on his own, and like it more when he bumps into Avengers and helps out, or runs to them for help.
Dr Strange- only go to him for magic/cosmic threats
Hercules- another fun, powerful character to bring in and out