I don't know how you guys continually miss the point that this game only exists because of what the designers thought Kinect was good at bringing to the table and because MS is the only one who will fund its development. No Kinect = no Crimson Dragon, and almost certainly not made with the very same crew who was responsible for the Panzer Dragoon games that this title is clearly inspired by.
That doesn't make it a good motivation or decision, nor does it demonstrate that Kinect provides us opportunities that didn't previously exist.
Are you Don Mattrick, Kudo Tsunoda, or Steve Ballmer? No? Then guess what, it doesn't matter what you think justifies Kinect or not. Also, I'm pretty sure the guy who's worked on Panzer Dragoon and Phantom Dust knows what the fuck he's doing.
Do you think I'm arguing whether Kinect is a good *business* decision? Because if you do, you've somehow completely misread what I've said. I'm speaking about whether Kinect can be justified as bringing something to gaming, not whether it can be justified as bringing MS money. I would think that as a gamer and consumer you'd be more interested in the gaming part rather than the money a company makes.
And appealing to the "authority" of a game developer doesn't make your case. Game developers make decisions that gamers dislike on a regular basis and this fact observed in any number of interviews where developers will admit to mistakes they made and how they plan to resolve them in the future. It's not like this is a radically difficult field that requires years of expert knowledge to understand either, which makes your appeal to authority even less useful. You're going to have to actually provide an argument as to whether Kinect is justified as an interface for a game like this rather than asserting it to be true because a designer thought so.
There are already several good games that can't really be done without Kinect, i.e. they would play much differently. While a game like this could certainly be made to work with a controller, it wouldn't feel the same. A lot of people swear that while controller option indeed offers better precision, Child of Eden simply feels better with Kinect, and it's already been explained why there is no controller option in this game.
Which games are those? Beyond mini games (e.g., Kinect Sports), so far the only game that looks like it might really do something unique is Steel Battalion, but given the limited information, the jury is still out on it.
If a game "feels" better to you with Kinect, that's your prerogative of course, but that is an extremely subjective argument (meaning opinions on the truth of that will vary widely) and as is such, is a rather poor metric and argument for the value/impact of the interface. A more objective argument is if it allows game mechanics that simply are not possible with a normal controller, and this what I'm challenging.
For the record, I think games *could* be made that justify Kinect as an interface. However, thus far I haven't seen much effort to that effect and I don't think Crimson Dragon, regardless of how good it is in general, is a counter point.