#1 A triple threat clash at SummerSlam

When talking about the Universal title, we shouldn't ignore the classic that AJ Styles and Seth Rollins had. As expected, they put on a clinic, told a great story and had the best Universal title match in a long time (arguably since the SummerSlam 2017 Fatal-4-Way match).
AJ Styles and Seth Rollins shook hands, indicating that there isn't any heel turn happening anytime soon for The Phenomenal One. However, he looked great even in defeat and there's no doubt that WWE will want to rerun a program between them.
Look who just shut down all of Tony Khan's critics! More HERE.
They could still have a match and a series that leads up to SummerSlam, with Brock Lesnar cashing in to announce his participation in a triple threat match.
Lesnar vs Styles vs Rollins would be a blockbuster SummerSlam main event and it could lead to one of the most anticipated PPVs of all time. It's a great option for WWE to consider.