Yeah, that'd be kewl. Part of me thinks though that Cena will be so mentally pre-occupied with facing off with Wyatt later that he may not be in the kind of mood to show up on-screen with the other three. I know that sounds like a small (and maybe even silly) point to consider, but still. I also feel that's probably why they had he and Hogan share screen time together on Raw a few weeks back, because they weren't planning to do a backstage segment with them at Wrestlemania.
That's very possible. Just thinking about the possibilities (and thinking WWE wouldn't let this one get away if they could make it happen in any way).
wk