I thought about the mixing issue, and not sure how that would be set up. I am sure someone has done this......
I also like the idea of using a multirotor mixing board like the KK style controller. I know that Hobby King advertises one for about $20.00. It has a 3 axis piezo gyro on the board which is great. I know it has a 3 rotor profile on the list of set up. I am just not sure if you used this board, if it would take the place of the 3 brushed, ESC, do you?
I was also hoping to hear back from some of the folks who posted on this to see if they made any progress on this.