Lane, I expected it to be Reigns. The thing is I honestly wanted Ambrose to main at WM, and considering how they made him the star of the build-up to Fastlane it could have easily worked giving him the victory which would also set up for a Roman Reigns heel turn. Not to mention there was also a branching story with Dean and the Authority. I mean, the story is right there. For the majority of 2015, he was right there at the championship. Think about it:

Triple H basically gave the order for Seth to break up the Shield. The Authority screwed Dean out of winning MITB, as Dean essentially had it won. Then Dean basically won it at EC, but it was reversed on a technicality. Then he had it won at the subsequent MITB, but the title basically slipped out of his fingers. Dean almost had it won at Survivor Series, but he barely lost to Roman. Dean was in the Final Two in the Rumble, but Triple H eliminated him. When you think about it, Creative try and make Roman the underdog, but they do a much better job at having Dean be the underdog. He's been screwed time and time again, and it would have been great seeing him win.