Baron Corbin has been with NXT since 2012, and has expressed his frustration at not being on the main roster yet. The reason WWE haven't called him up, is down to his slow progression in wrestling skills. However, in the last few months, he's displayed a much improved game. He's probably as ready as he's ever going to be. He does have a great look, that can't be denied. Plus, he's a natural athlete and tough guy, with a legit background in the NFL. He's the kind of guy who Vince McMahon would view as an ideal Rumble debutant. Just like Rusev a few years ago, he'd be a big scary guy coming in and battering the Rumble competitors.