I think this is the time for Seth Rollins' reign of terror. Cena wins at RR, Rollins cashes in, Rollins becomes champ.
Rollins defends at Fastlane and beats whoever they put in front of him at Wrestlemania (whether it's Reigns, Bryan, or maybe but not likely Ziggler). Cue the next couple months of Authority terror and domination until Daniel Bryan gets to finish what the Authority started against him. I'm sure a lot of people want Daniel Bryan to come back and get the belts back right away but I think giving someone else a chance for a while first and letting Bryan finish off the Authority later is the best way to go about it.
Rollins has the in ring ability and the mic skills to be a dominant heel champion right now and it's time the 'next generation' grabs the bull by the horns so to speak.
Of course WWE could just decide to have Reigns demolish everyone on the way to a WWE title and we get more hilarious promo botches.