Well... few predictions/scenarios going through my head
Something just hit me that all the writing is on the wall for Edge to win. I mean the story is already built, very easy for them to sell his comeback & Spear vs Spear. Roman needs a fresh face. Nobody will knock it. It just seems too easy for them not to do.
On the other hand I have this feeling they're just going to forego all of that obviousness like they do & go with Braun Strowman. OR Goldberg...
Just have a feeling Vince made some kind of deal a while ago with him and they're doing all these stories & documentaries on WWE Network about him.
Then a long shot tells me they got Taker to do his last match ever at WM37 & he wins and does the honors for Drew.
Then there's Daniel Bryan or Brock