After watching Fastlane last night I've come away with a few things that I think are brewing for Mania.
1) I believe Cena is actually about to do the heel turn that I know people have been dying for. I think he's going to wind up with the heel turn at Mania, even though it's going to have to happen while wrestling Rusev.
2) I believe Seth Rollins is going to lose a singles match to Orton at Mania but walk out of the show as the WWE Champion. I don't believe, at all, at this point that they're going to leave Mania with Reigns as the champion. I can't see Brock Lesnar winning, even if he winds up staying with the WWE, cause of his limited availability. Which, btw, I'm totally okay with I just wish he'd be able to be on a few more TV shows. I am loving the way they've booked him to only wrestle at PPV's where it gives him the big fight feel.
So with that said I think Reigns will beat Lesnar but Rollins will finally cash in his Money in the Bank contract and then defeat Reigns and walk out as the Champion. It's really to the point now where it's about the only thing they can do with Rollins and that contract match.
3) Daniel Bryan is going to be completely wasted at WrestleMania because with a clean loss last night they have nothing, at all, to follow up with going into Mania. So now he's going to win up in a thrown together deal just to get him on the WrestleMania card. Which is a darn shame. I could see him turning heel soon as well because it's pretty clear that Orton is now going to play a face roll in his return and with Ziggler becoming a more and more popular face, and Reigns going to be pushed as a face main event character, they're going to have to do something to get a few more of these guys as the heel.