#2 Brock Lesnar must retain the Universal Championship
Everything was great at WrestleMania when Seth Rollins defeated Brock Lesnar and became 'The BeastSlayer'. After that, Lesnar returned to win the Money in the Bank contract. He waited for a while and finally cashed-in at Extreme Rules earlier this month. 'The Beast' is the Universal Champion once again.
Many did not like the fact that WWE chose Rollins as Lesnar's opponent again. Due to Rollins' recent booking, he isn't too over with the crowd. So it might not be the best time to make him champion once again.
The better choice is to keep the title on Lesnar. He should retain at SummerSlam and Rollins should move on to another feud. Lesnar must be booked strongly at this moment. Or else he would look like a joke losing to Rollins in two straight matches.
Of course, no one would want Lesnar to retain the title for too long, but Rollins shouldn't be the guy to dethrone him. It could be AJ Styles, Samoa Joe, Drew McIntyre or anyone else. WWE will have a great chance of pushing someone new. So that when Lesnar loses, it doesn't feel like we are watching the same old thing again.