I'm quite grateful to hear that, I love my Halo too much to see it get screwed up by use of something that isn't guarenteed to work. Sometimes it's better to just stick with what works rather then waste a potentially good game on a failed experiment.
Not to say Natal can't still be a good invention I just don't see how it would work for Halo.
Not to say Natal can't still be a good invention I just don't see how it would work for Halo.