#2 "The New" Daniel Bryan
Even though Daniel Bryan and Roman have faced off against each other in the past, it's worth noting that Bryan is nowhere close to the lovable underdog he once was. Ever since turning heel, he has transformed himself into a maniac whose concern for the environment and the planet Earth has turned him against practically every other human being.
Imagine the promos heading into their match, with Bryan berating Reigns for adopting a reckless lifestyle which contributed towards Mother Nature coming back at him with a disease. The amount of legitimate heat Bryan would get on this statement would result in some must watch TV.
This feud gives Roman with some additional time before coming back, as Bryan can lose his WWE title against Kofi Kingston at The Show of Shows (if Kofi's push is continued till WrestleMania), and then go on to kick off a fresh feud against a returning, white hot Roman Reigns.