Hi.
I just came across the video here
http://www.youtube.com/watch?v=f6PavUVXFe4
Actually, this is for 3D quad flight as shown in this video.
What they do is starting from neutral throttle, rotor direction is changed based on up or down position of the throttle stick.
This is exactly same one as Heli.
Have anyone thought about implement this on ESC32?