well sony have a single hand controller in the form of Nav controller as I mention, alternatively just a standard move control. Above all I think some people are over complicating the matter assuming that this is going to applied to complex games or all games. Microsoft could never incorporate normal movement in kinect, but who's to suggest that the games where this would be applied would have normal movements? Many of Morpheus's demos were on rails anyway, on top of that Kinect1 didn't have head tracking which is essentially act as an accurate analouge stick. Further more how many games did microsoft really push with Kinect? 

Even if this is only applied to a handful of gimmicky experiences it may still very well be worth their time, as those gimmicky experience tend to be the ones that grab the mass market. Imagine a Nintendogs clone in VR, why would you need a controller for it, on top of that would a target audience of kids prefer controller or just you their hands? Again I think people are merely thinking about experiences they want to play and not thinking about the broader picture. 

Your head won't act as an analogue stick. It's pivotal and doesn't bounce back like a normal analogue stick. With a stick you can keep pressing a direction and the motion still flows in that direction, if they were to do that with your head it will induce dizziness, think of staring a direction while spinning on a tire swing. As shown in almost every demo, this works very well with onrails demos, but as far as full 360's, the full body/hips and shoulders has better utilization and the head just as a pivot. 

Since they have the single control scheme with Move and likely updates with it, what is the need for hand tracking. They already track hand movement, and likely better just with the Move, plus with the added bonus of having an actual usable controller. This honestly just seems like a move advanced Kinect, but unfortunately with very similar limitations. Although, if the Kinect would have incorporated a wiimote/nunchuck controller variation to go along with its usage, it really might have been able to do something special, but at the same time it almost negates the kinect for a superior variation of motion control. Yes, the wiimote+ and nunchuck/Move are far superior to the kinect when motion controls are concerned with the exception of some workout games that can track if you are actually doing the exercises correctly.  

Your head won't act as an analogue stick. It's pivotal and doesn't bounce back like a normal analogue stick. With a stick you can keep pressing a direction and the motion still flows in that direction, if they were to do that with your head it will induce dizziness, think of staring a direction while spinning on a tire swing. As shown in almost every demo, this works very well with onrails demos, but as far as full 360's, the full body/hips and shoulders has better utilization and the head just as a pivot. 

Since they have the single control scheme with Move and likely updates with it, what is the need for hand tracking. They already track hand movement, and likely better just with the Move, plus with the added bonus of having an actual usable controller. This honestly just seems like a move advanced Kinect, but unfortunately with very similar limitations. Although, if the Kinect would have incorporated a wiimote/nunchuck controller variation to go along with its usage, it really might have been able to do something special, but at the same time it almost negates the kinect for a superior variation of motion control. Yes, the wiimote+ and nunchuck/Move are far superior to the kinect when motion controls are concerned with the exception of some workout games that can track if you are actually doing the exercises correctly.  

Because at the moment, its just a screen in your face. An unconfortable huge device attached to your head for hours will get unconfortable aswell. Its a disaster waiting to happen.

For this tech to work, it needs to work better. This new motion technology marriage is a good idea and it needs to be less cumbersome.