#4 To spice up Wrestlemania's main event
Let's face it. As it stands, we are far more interested to see Braun Strowman and Brock Lesnar at No Mercy than we are in the rumoured Wrestlemania main event. We've seen Roman Reigns and Brock Lesnar take each other on in the past, and while it was a great match, it's not worthy of a grand stage like the Showcase of the Immortals, really. What may save the match though, is if Reigns underwent a shift in his character. Something that gave him an added edge in this titanic big match. Like a heel turn.
If Reigns used underhanded tactics to win the big match and become Universal Champion, or at least gave the impression that he would, we would be far more interested in the clash at hand, wouldn't we? If not, we have a sinking feeling that he would be booed out of the building, like in the past Wrestlemanias.