Modding a Bethesda games is half the fun of Bethesda games. The Creation Kit is a staple of Bethesda games and after my one clean playthrough it's how I replay all of them. It's sad to see we'll miss out on nigh all community made replayability even on PC after so many of their releases have. I know mods will still come out but the CK allowed for easier production of some extensive mods for past titles even a remake of this game in another engine. Surprisingly a script extender has already been released for it so hopefully people will still make the attempt.
