#5 Finn Balor
Finn Balor is back where he started a few years ago when he made his main roster debut - feuding with Seth Rollins. The main difference is that this time both Balor and Rollins are being pushed as a face character and this is something which will hurt their feud instead of helping it.
Balor is a very charismatic superstar and it isn't difficult to take a liking to him. The problem with this is that it has made his character a bit boring and predictable. He hasn't returned to the main event scene ever since he was forced to relinquish the WWE Universal Championship.
A former WWE writer just went after JBL for his comments HERE
His reunion with Carl Anderson and Luke Gallows did bring him back into the spotlight but this is not enough. If the WWE want Balor to return to the top, a heel turn is the best way for them to get this started.
Balor has always played the role of a face character since he debuted in the WWE and a heel run would inject new life into his current character.