This is what many on THE BOARD are predicting. It's sillier than it seems at first glance, if true. Aside from the Dusty Finish, the idea with Cena holding the World title was to elevate its stature. Now they're going to switch 'em around? Seems silly.
That sounds like a horrible idea. As much as I love the Big Gold Belt, I'd rather they unify them then do that. And exactly as you said Cena was meant to elevate its stature and instead they want to give him the real title and get that other one to someone else?
le sigh WWE, le sigh.
EDIT: Also now that I have heard this idea, I now can't see it going any other way. It seems exactly like what the WWE would do.