Imagine combining this with relatively cheap stereovision goggles (like the z800), headtracking wouldn't even be necessary as you would move by thought alone.

I doubt if the BMI signals are finegrained enough to replace the efficiency of a mouse or the movement of your head, even in forseeable future. For VR applications and games perhaps 2 Wii like gesture controllers for the hands, combined with built in headtracker in the visor will be more practical.

But for people having muscle diseases and other handicaps research like this offers much potential.