If it were up to me, the line-up chosen from the eleven characters depicted should be:
Star-Lord
Darkhawk
Martyr
Cosmic Ghost Rider
Moondragon
Nova
I feel like Groot might win out over Nova or Darkhawk, which would bother me because they could do with some exposure and I'd rather see a bigger shake-up instead of two of the previous Guardians sticking around.
I really love Adam Warlock but he's way too powerful to stick on a team. I mean, this group is gonna be mighty regardless, but that's overkill. Same goes for Silver Surfer, Gladiator & Beta Ray Bill. I'm sure each of them will be involved with the book in some capacity though. In regards to BRB, maybe a War of the Realms tie-in??