Well, whenever I hear someone complaining that Mario has to save Peach again and it's not a heartwrenching journey of self discovery, I'm reminded of that Penny Arcade strip where the guy is complaining that a muffin isn't a cake or a dog isn't a cat. You could probably tell the best story in the world with a video game, but if you have a story to tell, it's usually a lot more practical to tell it via another medium. Games need to focus on interesting gameplay above all else.

But yeah. Go, natural interfaces, go.