#4 Braun Strowman
Somewhere, somehow Braun Strowman has really fallen off the ladder he'd at one point smashed to pieces, and eaten for breakfast. This is because of an ill-timed heel turn made worse as WWE keeps pulling back on the trigger to the top for the Monster. The reactions from TLC indicate the fanbase is still willing to hang.
If Strowman is to show that he can go against Lesnar this time around then it'd be best for Vince McMahon to advocate this. Whenever McMahon has stormed into RAW to give the boot to a snivelly manager, he's had John Cena to pile on with just desserts. This time with his history with Corbin, that distinction should go to Strowman.
At the same time, seeing McMahon's on-screen reaction for the hulking beast is a treat for sure. It's unclear if he has well and truly soured on making Strowman anything more than the foil to the top dog, and much like Rollins, a meeting on RAW can give the fans a sign.