Very simple
Bring in Paul Heyman to lead Nexus and have it be cause WWE embarrassed ECW and destroyed the company he loved.
Great built in believable storyline, gets over the new talent, he helps them with gimmick/promos etc.
but as i said, WWE sucks so no chance they will think of anything this cool.
Really? That would be good, but WWE does not suck just because they will not do something like that.
There are companies who have much bigger issues than WWE right now...