Rock is booked for the next PPV right? Something to do with that, perhaps Lesnar "putting him on the sidelines" to lead up to the Rock/Brock they were talking about for next 'Mania.
Perhaps a heel HHH challenging Cena.
Not that anyone cares about Ziggler inc. but I think AJ will start blaming Dolph for the WM loss and 'make' him cash in, he will lose, AJ and Big E will turn on Dolph and he will turn face. A feud will ensue after which, the big-black-man-who-could-be-anyone (Ahmed Johnson/Ezekial Jackson say hello) will fade into the mid card and obscurity.
The Shield will win the tag titles with the Freebird Rule. They need to do something quick to freshen this angle of The Shield up, they're starting to lose focus and just be some random angle - something that leads directly to mid-card status forever.
John Morrison will return. Batista will return. Christian will return to no plans at all and be wasted.
I'd say it's business as usual for WWE though. The "big" summer angle will probably be underwhelming because we came to expect too much. They peaked with the Punk angle....it will probably be a long time before we see something on that level again.