Turning him heel won't be enough to save him if he continues to go out there and cut the same shitty, monotonous promos like he's been doing for the past two years. A heel turn would be more beneficial for him at this point considering how much of a failure his run as a face has been, but it's naive to assume he's just gonna develop some interesting persona that will eventually make him beloved just on principle. His short-lived suit-and-tie character in NXT was pretty entertaining and demonstrated how perfect he would have been for the role of The Authority's chosen one, but I feel the ship has sailed on that one.