Let's start with a big one. Dean Ambrose is a bigger babyface than Roman Reigns, and his reactions over the last weeks have been getting ever louder. WWE aren't deaf, they can hear what the audience wants. Even up against Brock Lesnar, Ambrose has been stealing the spotlight. Many fans would love to see him winning the triple threat at Fastlane and going on to topple The Game at WrestleMania. But is that reason enough for WWE to make the change? It remains unlikely, but then the chances of it happening are growing all the time. Ambrose is arguably the guy with most natural momentum at his back right now. In the past, (see Bryan) that's been reason enough to change things. Plus, what Triple H wants most at Mania is a five star match. Ambrose is likely his best chance to get that, as Reigns and Lesnar are more suited towards brawling. By giving Ambrose the win at Fastlane, WWE would be injecting boldness and unpredictability, which is exactly what this 'Mania season is crying out for.
