I would also make the team as powerful as possible like the Justice League.
My lineup would include:
Captain America (Steve Rogers)
Iron Man (Tony Stark)
Thor Odinson
Black Panther
Spider-Man (Peter Parker)
Northstar
Namora (formerly of the Agents of Atlas)
Wolverine (James "Logan" Howlett)
Spectrum (Monica Rambeau)
Blue Marvel Dr Adam Brashear)
Then on the reserves:
Wonder Man
Captain Marvel
The Vision
Hyperion
Quasar (Wendell Vaughn)
The Wasp (Janet Van Dyne)
Hank Pym