I think it's completely useless, at least at this stage of development (as shown on the video), even the guy testing (using) it is having some troubles with placing/rotating objects accurately (as you can see by yourself manipulations are really inaccurate, objects are 'jerking' especially when rotating them). Even if on the other hand it looks refreshing and interesting, well... I'm wouldn't sacrifice the quality and speed of development in exchange for innovations and some fresh looking but useless things like that.

Edit: but well.. this is still better than WED hahahaa

Greets