#4 Dean Ambrose (heel)
The majority of us are pretty sick of Dean Ambrose's good guy persona, and even if you aren't you can't deny that he's a fantastic heel. His work down in FCW and with the Shield is impeccable, and during those runs, we barely scratched the surface of what this guy can do. Seriously, if you let him go back to his roots then there may be no way that you can stop him.
Plus, he's pretty-much-done everything he can as a babyface. He's attempted to build the blue brand up, been outshined by Cena and Styles, won the IC title and even held the WWE Championship for a short period of time. Let's try and make him feel a little bit fresh again following a likely loss to Baron Corbin on the grandest stage of them all.
You can look, gentleman - but you most certainly cannot touch.