Range finder and optflow use facility aux switch

Waiting full fusion of optflow gps and range finder baro in ac3.5 it will be cool adding capability in 3.4 to switch in flight via aux switch
1: use of gps vs optflow
2: use of rngfinder instead of baro

Because actualy we need to change many params on the ground for use this differents sensors. And each reparametring could generate param issue due to human error…and also generate wasting of time…

What do you think?