#3 Brock Lesnar vs Kevin Owens vs Seth Rollins (WWE Championship)
There seems like a lack of genuine babyface contenders who could step up and challenge Brock Lesnar for the WWE Championship. While Randy Orton is an interesting option, it has already been done before. Aside from him, the biggest good guy star on RAW is Kevin Owens.
However, he is currently in a feud with Seth Rollins, who turned heel just a week ago. This problem can be solved by booking both of them in a triple threat match with Lesnar.
WWE generally doesn't book non-title grudge matches at Royal Rumble so this is a real possibility. Owens is the best candidate to face the Beast for the WWE Title and while it should happen at WrestleMania, the company is likely booking Lesnar against Tyson Fury at the Show of Shows.
Rollins also has unfinished business (of sorts) with the world title scene, having not received his rematch since losing the Universal Championship to 'The Fiend' at Crown Jewel.
Lesnar would work extremely well alongside Rollins and Owens, both of whom are fantastic wrestlers. This is certainly a marquee WWE Championship match which could feasibly be saved for 'Mania, but let us just give The Beast the best possible match he could have at the Royal Rumble.