[samste]

I think a variable adjustment may be nice but also a awkward as you wont know the setting of flaps down without knowing the position of the variable knob. Which means either looking at it in flight or setting it up prior and not bumping it. But Good in the sense working out what is best for the plane then setting it as a fixed flap switch position.
Alternately adjusting Flaps to the desired speed would be nice too.
I have on the glider my Flaps are one setting only fully down and that works fine for that as the reverse of the switch gives me spoilers.

On my Rv 450 Eflite i have two settings via the 3 position switch, half down and fully down. but realistic i only use the half flaps down as full Flaps slows it down too much.

Decisions, Decisions

Steve