Has Gabriel ever been a "heel" though? Not really, IMO. He's just been a follower who gets clumped with heels. He never talks, never does anything really heelish. Just comes in, hits his 450 to end a match or a beat down and thats it.
I think Gabriel, Slater, Barrett are all about ready to get some singles burn for the better. Then in Punk's NXT, Hennig and Otunga will probably be paired with someone else as a tag team and Batista Jr. will get paired as someone else's muscle.
Most of these guys would greatly benefit from an ECW brand.
I actually miss the WWE's ECW brand, or that third brand in general...it gave these young guys a nice transition spot from FCW/Indies to the WWE roster all while giving the WWE audience a chance to get acclimated with them properly in their environment.
Lots of the young, top guys, were stars of that brand...and it worked out for the best for them. Miz, Punk, Morrison, Kofi, etc. That would be a great place for Gabriel, Slater, Hennig, Ryder, Otunga, Batista Jr., Hawkins, etc.