One more thing to add to yours, is something else Spider-Man brings to the group: Experience and Connections. people often discredit Spider-Man as a low-level strength without much to offer when broken down, but he has fought beside almost every hero in the Marvel universe, been to most locations, seen almost any thing the cosmic world has to offer.
But I like the idea of your team if:
A: Phylla has a thing for Carol
B: Gravity has a man-crush on Spider-Man
C: Spider-Man and Black Knight constantly call Hercules "Herakles" to get on his nerves
D: Gravity is constantly asking disbeliving questions about Magic to Black KNight and Hercules
E: Ms. Marvel calls cap on the "Eye-Candy" accusations, which he naturally says aren't true, as she walks away, all the guys except Cap and Phylla lean over to watch her walk away.