To me this looks like an amazing idea! However I am not really sure as to how my parents or people above a certain age would react to this. Using an iPad and other touch based devices for a few years, gives me the experience needed not only to operate a UI like this, but also makes me able to easily memorise what happens with three fingers, four etc. But I sense a high level of difficulty trying to explain this to my mother, who just learned how to “swipe” photos on my iPad.
I can see this being the future though. When my daughters are 30+ and I’m the old guy in the picture, maybe I’ll be tech savvy enough for something like this.