Kane - frankly I'd just fire him and get another 'Kane'...one that isnt fat....
Cena needs to go heel and get a gimmick - the rapper thing was daft but atleast it was something! Maybe an NWO Hogan style thing - turning on the fans who boo him despite all his done, could get plenty of shots of 10 year olds crying in the audience

Jeff Hardy - i want a heel turn! I want to see an insane Hardy, the victim of one to many stunts - his face paint puts him as the visual successor to Sting - go with it, have him appear from nowhere, a man beyond the edge hell bent on killing himself off
Edge - face turn! The rated R superstar doesnt work on a PG show - time for him to be a face
Triple H needs a new entrance, music and he only works as a heel, time for a new faction and he takes over the family business...
Shaun Michaels - no more sexy boy - the crazy Wrestlemania preacher was fantastic, he's a Christian nut job - lets have him as on screen Christian nut job and (obvioulsy) a heel
Undertaker heel turn - evil Taker! I want him sacrificing Stephanie and burning holes through rings, claim souls, the whole works!
...now I've had a lot of heel turns here - but I see people like Morrison, Ziggler, Dibiase, Batista, Edge and MVP taking up the 'face' positions.