This is interesting as a thought experiment. I've been using custom airframe mixes a lot and it might be possible using that: define the motor driving the props at (0,0), then add 'motors' at appropriate locations that actually drive collective driver servos each rotor, perhaps combined with some output calibration? Inverted flight might be possible with the right mix but bring Kleenex, that vehicle looks too pretty to crash.
Still, you're way of the beaten-path & this is a pretty advanced topic.