Sami Zayn or Jey Uso are the most entertaining options IMO since we know Roman is winning regardless. (Sami should be pushed as a serious main eventer, but that ain't happening right now at least, so plenty of time to rehab him later.)
Cesaro would be a great match, but this loss would probably end his push and cup of coffee in the main event.
Bryan losing to Roman is just another buzzkill, like it always is when that happens.
No more KO or Corbin vs. Roman - please, I'm begging you!