Most instant rematches are horrible, especially when nothing new except for another regular single's/tag team match is announced. This one is an exception to the rule.
Christian and Swagger put on a damn fine match at Backlash, and there is NO reason to think they can't up that with their rematch. I foresee Swagger looking stronger and more cunning, with Christian still finding a way to stay one step ahead in retaining his Championship.
I did have an alternative idea, and that is with the outcome that happened on E.C.W, I foresee Tiffany possibly adding Tommy Dreamer to this match, and maybe even making it an Extreme Rules match. (maybe with the gimmick, but almost definitely with the 3-way)
Dreamer does only have until the beginning of June, and I believe the next Pay per view, regardless of what, is one day short of the date he gave. Which means, this is the last Pay per view he has to win it on. Dreamer could easily be added, and end up winning via pinning Swagger, only after Christian hit a move.
This could also lead to a Dreamer heel turn, via taking the ultimate opening in surviving within the Company. Of course, if this remains a single's match.. I'm also in firm belief that Dreamer will turn heel on Christian, in favor of mainly trying to save his own career from the blunder he put himself in by saying he'd quit if he didn't win the title.
Any way you look at this.. be it Christian/Swagger, or Dreamer being added as a third component, it's bound to be yet another great move in helping E.C.W along.