Roman Reigns
The current feud with Rusev over the United States Title is the best male feud in the company right now. Reigns has been slowly winning over fans with his ability in the ring and getting better on the mic. After his match with Rusev, who steps up and faces the Big Guy.
This is where the company could make a huge statement. While he does not have to win, Strowman can take a huge step forward, challenging the man who has the chance to be the top guy in the company once again. This could very well be a WrestleMania 33 type of confrontation in Orlando.