He is giant athletic and charismatic

His debut was a little underwhelming because of it being on such a packed card, but week in and out he will win more fans by just being cool to watch. Now if they put him in the 50/50 club he'll be in trouble, but he is a guy they should be pushing on long win streaks for a while, then let him have a good feud with a big heel where they trade some wins but he wins in the end, finally a IC level title shot and he can be made.

Of course none of that will happen probably.

Corbin needs help because he just isn't that interesting overall, I know he has his fans and I don't hate him, but he isn't going to just get himself super over by coming out and beating guys up the way other monsters can.