After leaving wrestling for about a decade and coming back just recently, Fandango and Ryback are the only modern wrestlers I actually like so far. Ryback because he just has an amazing presence, and Fandango because he almost seems like a throwback to the 90's/00's with characters like Golddust and Val Venis.
Other than that, there's all kinds of weird characters from the past who'd be good. My personal vote goes to Undertaker or Mankind.
PS: Unrelated, but I don't know how Mark Henry is still around. He was a bad wrestler ten years ago, and he's still pretty terrible. All of his matches are the worst I've seen, downright terrible, and his persona is a hopelessly generic "I'm AAAAANGRRYYYYYYY!" big dude.