#4. A Roman Reigns vs. The Rock feud
This would be an interesting place for WWE to go with a Roman Reigns babyface turn, but if done right, it could pay dividends. At this stage, it's unclear whether The Rock will ever make his in-ring return to WWE, especially since he admitted last year that he quietly retired from wrestling.
With that said, a match against Reigns seems like the only logical option for The Great One if he returns. It's the biggest match WWE can make in the next couple of years, and WrestleMania 39 at SoFi Stadium would possibly present the last opportunity to do it.
It's hard to imagine The Rock turning heel, but if the storyline is done right, WWE can utilize it to turn Roman Reigns babyface. When looking at WWE's point of view, it's the perfect opportunity. It will be a WrestleMania main event with the most eyes on it, and that's the exact moment where Reigns can become the babyface star that the company has longed for him to be.