I really like the zombie talk, this is my favorite magic by far, so I do think that it is a fun part of it, however I agree that it should be an option. It would be nice to have an option to turn chat affect off or on, so that if you want, you can still be a zombie and talk to others.
Its me again. I was thinking about my general existence and I bet players will see my profile picture and think, Oh.. shes a dog with an outdated computer. No wonder she talks nonsense all day.