[tytyty]

How about a synthesizer? I can immediately think of many useful ways to use a synthesizer with this controller. For example, touch pressure to filter cut-off or LFO amount. Finger vibrato to OSC pitch, OSC detune, filter, and so on.

I think the video does a reasonable job showing how it can be used creatively. I get the point you're trying to make about harmony between the input device and sound source. However, I would argue in modern days with really incredible software synthesizers both software and hardware (I own one of these: http://www.studioelectronics.com/products/synths/omega8/) the inverse is more common.

Input devices do a poor job of exposing the features of the instruments.

This is the first device I've seen that seems to actually care about the performability and feel without making you look like a douchebag. That's what makes it interesting to me.