I agree, I like the roster. Ewing just gotta make sure he gives some life and sex appeal to the cast so that they don't fall into Super Friends category, especially since there's no comedic relief guy nor slutty trouble maker or anyone who isn't a mature adult outside of Chavez.
The Ultimates relaunch is one of the best books out since the ANAD Marvel Universe started in October because of the roster mainly.
Reed had DECADES to solve the Galactus problem, and T'Challa and Blue Marvel got it done in two issues
But still, we do know T'Challa can come across super arrogant. Adam, super conservative. Carol & Monica both hot headed/a bit insecure, 'attractive' and a history of competing against each other. So Ewing can really make this team and cast stand apart if he can channel into what makes them each tick and not hold back in the characterizations.