#3 Brock Lesnar could return on SmackDown and challenge Roman Reigns with Paul Heyman caught in the middle
Paul Heyman's partnership with Roman Reigns has been electric ever since they were paired together, with the special counsel to The Tribal Chief doing a brilliant job at maintaining his stock high. Heyman has a subdued role alongside Reigns when compared to his duties as the advocate for Brock Lesnar.
Since Edge won the Royal Rumble and will likely challenge for the WWE Championship, Brock Lesnar could move over to SmackDown. His reaction to Paul Heyman working with Roman Reigns is very intriguing. The two heavyweights could initially work together, as the modern-day Two-Man Power Trip.
However, when things eventually implode between the two of them, the eventual match between Lesnar and Reigns will be great. The Beast works best when he has a story he can get behind. Heyman's dilemma is a great story he can get behind. This is a possible direction for Brock Lesnar at WrestleMania.
In terms of blockbuster main events, hardly anything can touch this. And if Lesnar and Reigns are at their absolute best, their match could surpass their slugfest at WrestleMania 31. A victory over Brock Lesnar would solidify Roman Reigns as the most dominant WWE star in years, especially if Paul Heyman sticks with him.