#2: WrestleMania 36

Brock Lesnar's contract is unlike anyone else in WWE, and will probably never be replicated.
A very wealthy man, Lesnar's contract allows him to go months on end without appearing, only to be thrust into the main event scene upon his return.
As if that wasn't bad enough, the Money in the Bank contract gives Lesnar to cash-in whenever he wants, and what show is bigger than WrestleMania.
The Beast and Paul Heyman have always touted Lesnar as the biggest attraction in WWE, and having Lesnar cash-in at the biggest show of them all would certainly be satisfying for both men.
There would also be some extra-satisfaction for Lesnar if he was to cash in on Rollins at Mania 36, one year after losing the title to the Architect, and five years after Rollins stole the WWE title by cashing in MITB.
Becky Lynch has been challenged HERE.