#2 Big Cass

Well, there isn't much he could do currently since he is recovering from a torn ACL. But he really needs a change whenever he comes back.
There could've been something after he split from Enzo Amore, but he's just another big guy.
WWE needs to make sure that they don't book him as a monster with a few moves. He should be able to go out every week and put on a great showing.
He shouldn't be the stereotypical big guy like plenty of wrestlers were before him and be like a Kevin Owens or Braun Strowman who have great in-ring skills.
I personally thought the split between him and Amore was a horrible idea. But since his former partner is no longer with the company, WWE has to do something with Cass.
His Mic and ring work could be improved but he could be something a few years down the line.
I don't see him in the main event spot anytime soon, but a push in the mid-card could do good for him. Possibly a U.S or Intercontinental title run could do wonders for him.