Thank you for your answer! My main intention is to find a simple solution for the FC when the control model changes due to different speeds of the aircraft. I just thought of this; it might not be a problem that needs much attention. Of course, this issue might be more significant on high-speed planes, for example, divergence under different aoa.
It may not need such a high frequency of 5-10Hz to change. I just want to try it on a 450 heli first; maybe this is a more practical value? Anyway, I will try it when I have time.