I mean, it's Midnight now but you post these things before breakfast.
Anyway, two impossible scenarios, you decide which one is better:
1. Rock somehow gets enough insurance coverage to work another actual match, Rock v Roman at WM 2022, title vs whatever actual tribal chief title Rock holds; or
2. WWE waits out Moxley's AEW contract and waves $5 million in front of him to work Roman at whatever stadium show they can put together (ideally WM, but whatever the timing works out right for).
I almost had Cena as Option 3 but he hasn't been gone quite long enough to line up for these. And it's by far the most possible of the scenarios, even if it's not entirely likely.
I’m gonna go with the Rock because the Rock.