Ah yes, I forgot that part.
Ironically, it's only recently that the Avengers look like a country club, always making clear that there are core members, the important ones, and glorified interns who never stay long.
Some characters I could see in Adam's team:
*One Power Pack member. They always have been close to mutants, befriending the Morlocks, the New Mutants, Kitty and Logan, due to Weezie being editor/writer on several X-books. So it would make sense that they'd want to defend mutants against bigotry.
It would be either Julie or Alex, since Adam would not accept kids as young as Jack and Katie. Rather Julie to have some gender balance in the team.
*One Alphan. Alpha Flight always had several mutants in the line-up, so I guess the team members are also quite concerned with anti-mutant bigotry.
Centennial would be nice. Since he is another superman-ish black dude, who is even older than Blue Marvel, I'd like to see them interact.
*Justice. Mutant himself and a heart of gold, but almost never involved in mutant affairs.
*Nova. He got pretty much involved in mutant wars on Mars, so he may as well take another step.
*Taaia. At this point, she is basically Adam's partner/sidekick/more?. And it's always interesting to have the POW of somebody who comes from a totally different place and is a stranger to both mutants and homo sapiens.
So here we are: Blue Marvel, Lightspeed, the Centennial, Justice, Nova, Taaia.
Hmm... Not very diverse, powerset-wise.