I've seen top talent wind up in this situation before. They land an assignment on a popular team book only to find that most of the current and classic roster of the team is not available for them to use.
In the spirit of Cap's Kooky Quartet and the Justice League International, your mission is to name a team or two and fill its roster with as few current or classic members as possible.
Here's my stab at this, pre-first cup of coffee:
Bentley Wittman (aka the Wizard) (I like taking characters with a streak of obsessive envy and forcing them to put up or shut up)
Sharon Ventura (in her Ms. Marvel persona, now Ms. Fantastic)
The 4man. (Mystery character. Hint: He is a Richards. However, there are shades of X-Man in there. Plus, the pun is irresistible.)
Bullseye (So sue me)
Twilight from 2099
Erik the Red
-- The "Guess Who...?" roster