Um, no. Nope. Nuh-uh.
Look, I’m a wrestling mark from way back, okay? I like CM Punk. I liked him when he was wrestling because he was kind of odd-man-out with the powers-that-be at WWE. They didn’t make it easy for him. And then when he turned on them, he was anything but demure about it. He’s a legitimate tough guy. But Ash? I’m afraid not. Maybe Punk can act. I haven’t seen THE GIRL ON THE THIRD FLOOR yet, but I’ve heard good things. Punk’s abilities as a thespian aren’t the issue. No matter how good he is, he isn’t Bruce Campbell. Nobody is Bruce Campbell except Bruce Campbell. Nobody could bring to the role the screen presence Campbell had. And Bruce Campbell knows it, too. He said on Twitter: “CM Punk is great! He should play a guy in a horror series named Nash, or Bash, or Lash. With all due respect, the name Ash is, like the best table at a restaurant, reserved.” Damn right it is.
If Campbell isn’t going to be playing Ash, then there should be no Ash. It’s as simple as that. Introduce a new protagonist. I think it would work better if it were a female. That way there would be less (to no) room for comparison with Campbell. But don’t put any other actor in the role and expect it not to sink. Not even Pennywise could get that one to float.