#2 R-Truth
Back at Capitol Punishment in 2011, we saw R-Truth challenge John Cena for the WWE Championship after a steady build that allowed Truth to expand his horizons in a new heel role.
He may be moving towards the latter stages of his career as an in-ring performer, but he still seems to be in incredible shape for his age. We don't necessarily believe that he's capable of putting on a 30-minute classic with Cena, because that'd be naive of us, but acting as if he has no right to be in there with him at this point in his run with WWE is just wrong.
Perhaps this match would be serious or perhaps it'd be a comedic showcase, but we're pretty confident in saying that Cena would be happy to do it either way. Truth has made a career out of proving people wrong and battling against adversity, and the WWE Universe already knows how good he can be when given the opportunity.
It's a risk, but it's one that is worth taking.