1.Braun Strowman
Make no mistake, Braun Strowman has had numerous opportunities at the Universal title. However, he has never been able to win the Universal title even after chasing it for almost two years now. He has had five opportunities since 2017 and has been unsuccessful every single time.
In my opinion, Strowman deserves at least one lengthy Universal title reign. He is one of the best big men we've ever seen. The Monster Among Men is extremely agile for a near 400-pound powerhouse and has freakish strength. Fans don't want to see Strowman flip vehicles over or destroy rings anymore, they want to see him at the top of the mountain as the Universal Champion. Right now, Strowman is not near the Universal title picture, but that could all change soon if he chooses to enter the title picture.
Perhaps, WWE thinks that Strowman would need to turn heel for a feud with Seth Rollins, who is a fan favourite. Raw already doesn't have credible babyfaces, hence WWE may not want to take a risk by turning Strowman heel again.
Strowman Vs Rollins could be a money-making feud in the WWE. The two can put on a great show and this rivalry will benefit both stars immensely.