#1 Cedric Alexander
As the current Cruiserweight champion, Alexander has shown that he is the most deserving man on the roster, with his continued dedication to improvement.
He has faced injury which caused setbacks and was caught in some odd pairings, especially the one with Alicia Fox. However he has emerged out of the shadows and engaged in some incredible matches against the likes of TJ Perkins and Drew Gulak, among others.
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It would be amazing to see just how far he could go if he's allowed to spread his wings and deliver promos that were more off the cuff.
For anyone that saw Alexander during his time in Ring of Honor, they witnessed just how effective he could be as a heel, and that he could be quite dastardly.
As a face he has shown how competitive he can be and how much intensity he has, but adding a little more of an edge would also help showcase another dimension of his character. This would certainly be something best shown on either Monday Night RAW or SmackDown Live.