#3 Seth Rollins and Daniel Bryan go on a classic in-ring rivalry
Based on what happened during the Royal Rumble Match, Seth Rollins may have already confirmed his return feud. He eliminated multiple Superstars from the match, with the most notable one being heavy favorite, Daniel Bryan. This could be the basis for the program between the two.
With possible suggestions that Royal Rumble winner Edge might challenge Roman Reigns at WrestleMania 37, Daniel Bryan would need a good spot and a high-profile opponent. Aside from Reigns, there is no heel on SmackDown that is as high-profile as Seth Rollins.
The two have had matches in the past, but not a full-blown singles feud. Bryan and Rollins are certainly capable of magic together. They could put on a couple of wrestling clinics on the Road to WrestleMania, with a blowoff match coming at The Show of Shows.
This would be great for WrestleMania, with a compelling story that could be told along with the guarantee in match quality. Seth Rollins vs. Daniel Bryan is worthy of stealing the show on a one-night 'Mania so with the event being split across two nights, it could be even better than imagined.