With so little time left to build someone up to that next level I can't see anyone new holding it really. Well outside the obvious, but heck I could even see that being stretched out.
Wade Barrett if the Nexus thing continued to be pushed and got much bigger, but I suspect after tonight his role as "Leader" and "The Man" may be in question as someone turning heel/appearing takes the spotlight.
On Smackdown, the belt is stuck being battled over by veterans, maybe if Undertaker gets it one more time I could see someone like Drew McIntyre ending his title reign.