Dave, i assume this concept is applicable to roles where the cost of the machine does not have to justified against the payload it can carry?
We were discussing compromises. The one i see here is the need for structure to carry the moveable rotors - ever wonder why no commercial plank has ever been swing wing? Completely stopping a rotor is also a bad idea, the front rotor only protection against catastrophic structural divergence is to have an airflow moving over it. Either that or you also need to consider spanwise flexural control - how compromised is that!
Mart