I'd agree with SGLC's assessment. The Vaudevillains are perhaps a bit too meta for the average wrestling fan, and without a good feud and a clear direction, I think they're headed into Los Matadores territory after an initial push.
Enzo and Cass have huge potential. Cass has a good look and is a decent big guy, and Enzo can talk like a champ and bump like a legend. If they bring up Carmella to work with them and give them somebody to work against, they'll be a big deal.
Crews has all the potential in the world, but needs either a gimmick or a manager to cover up for the fact that he's basically an agile Lashley.
Corbin has huge potential and they seem to be pretty high on him. He's an okay worker and an okay promo, and his look ought to do the rest.