If you want a serious answer... I'd kayfabe fire Roman after he loses at the Rumble. Get Roman Reigns off the road for a while, build up another guy, but still have the Authority screw with people on Raw. Keep their heat. Eventually Ambrose has had enough right after Fast Lane where he's screwed out of the IC and attacks Triple H with kendo sticks and stuff, next week in an attempt to "fire" him Roman runs down the ramp to save his job and Superman Triple while he's talking...
Either way, they really have to get Roman off TV to keep him from being the latest injury to derail their Mania plans.
And I hope "Urrr everyone else is hurt so guess it's us again woo" is the build for Undertaker vs Brock Lesnar IV