Here is a new twist on things: http://spectrum.ieee.org/automaton/...ros-2013-should-quadrotors-all-look-like-this ...Tiger
Yep, what I been sayin, but ditch the three little motors, add another big main blade like a KMAX and now you got something.
If you are going to go with big variable pitch blades I also think that a coaxial system is better and simpler. This one has the disadvantages of both helicopters and quads. This has four motors four servos and also the linkages necessary for the main blade pitch and all the adjustments necessary to make that work right and not vibrate. I am assuming that this system is adjusting the pitch of the two main blades equally via a single servo and therefore is unable to feather the pitch like a regular helicopter with a swash plate. This still seems too complicated to me compared to a regular quad.