An easier approach is not to rotate the whole wing. Just rotate large flaps (flaperons) , and have the motors independently mounted like
a bicopter. There are several examples on youtube.
The flight controller can do the mixing. I haven't yet found a good thread that fully describes how it was done, and that the builder is
fully satisfied with the results. This guy seems happy, but uses a more complex method.
RC VTOL - V4 - YouTube
You can also link surfaces to the motor tilt, and motor tilt to the gyro. I am checking whether Ardupilot supports this.
This would be a type of mixing.