Each of your reactions touches on issues which cropped up in my own mind as I eyeballed the product.
Also, I wonder if this isn't a cure in search of a problem - how many low-RPM accidents have there actually been in Robbies, anyway?
I told the missus that if she really wanted to develop a money-maker and life-saver, she needed to develop a simple bolt-on control assist which reloaded the rotor whenever a Robbie went zero-g. Hell, you could drive it with iPhone accelerometers, those things are in everybody's pockets already.