Re: Ultimate Warrior as a heel.
I think he could've pulled it off if he wanted to, but that was definitely an issue in and of itself. Also, I don't think those were the times of "turns" quite like they are today. A turn from a good guy to a bad guy was serious business back then and didn't happen on a dime quite like it does today where going from good to bad guy is as easy as changing underwear (which is actually the only reason why I respect Cena for not turning because when he does, it'll be huge no matter when it is)
He probably would not have been as successful as a heel as he was as a face though for sure. His face run at the time was absolutely perfect in terms of timing and era it was in and changing anything about the Warrior almost seems sacrilegious to me. Kinda.
All time: Warrior, Bryan, Punk, HBK, Orton, Dean Ambrose, HHH