It depends. It'll probably be a while before CNG can finish it, since there's an awful lot of coding involved, but if he thoroughly debugs it and follows through with it, then it'll probably be a lot less buggy than Essentials. That only leaves the issue of having to re-learn all the methods, scenes, etc. It's a bit of a gamble, but I wouldn't go as far as to say it's a bad choice though.