The scripts are definitely a limiting factor and the way that WWE presents its wrestlers is horrible. Some wrestlers do demonstrate clear personality though. Bryan, Lesnar, Miz, Cena, Nakamura (even with very limited English), Owens, Ambrose, Lynch, Asuka, Flair, Big E, Joe and so on. There are ways to get a personality across even in the overly-produced WWE environment, though not to the extent of some past eras. There are also guys (think Anderson and Gallows) who can't show personality on WWE TV, but have elsewhere. I don't see it with Rollins. He didn't show much personality before he was in WWE, he doesn't show much (personality that is) on any social media stuff I've seen or in interviews outside of WWE. His body language, psychology, the way he delivers his scripted promos, nothing indicates that he's much more than a really fit, athletic guy. If I'm wrong about that and he eventually shows something then all the better, as Rollins with a personality would be great.