#2 Bray Wyatt
Bray Wyatt was last seen on WWE programming over half a year ago. Since then, he has been completely off the WWE circuit aside from a few house show appearances, most notably at the untelevised portion of Starrcade, back in November.
Since then, the WWE Universe has been waiting in anticipation for Wyatt to return, with each passing week going by making the anticipation rise. This really is WWE's chance to make this man into a star, something that should have been done years ago.
The Eater of Worlds was last seen as a babyface, and could very well return as one. The match between Braun Strowman and Baron Corbin is one that is guaranteed shenanigans, with interference expected from the likes of Drew McIntyre.
Other names could show up as well and turn the tide on either side, like the aforementioned Lars Sullivan. However, the effect of a surprise Wyatt appearance would be as impactful, if not more. It would be great to see the Monster Among Men finally put down his eternal rival, following an assist from his former leader.