This idea would be more for the kids, but given that children are Cena's main fanbase, it would actually be a fairly awesome way to bring him back! He's scheduled to come back right around Christmas, so it does make sense. WWE would have Santa Claus on Raw, and he'd be giving out presents to WWE superstars. In the main event segment, he'd have a large present for whatever heel that Cena is due to be working with from December to January. The heel would be made up, but before the could unwrap the large box, Cena bursts out of it and decks the stunned bad guy. The returning hero would then celebrate with Santa Claus, delighting millions of children the world over.