Hi,
The suggestion is quite simple: make FC3 cockpits clickable as in VR it can be quite hard to find the keys on the keyboard. I don't mean make it A-10C detailed just to make certain buttons clickable like flaps, gear, radio volume, lights etc. so what functionality is already there but on keys(no need for MFD in F-15) and I think most of the animations are already there.
Step 0 (fast solution) could be to add a GUI panel(toggleable) with tabs, buttons, sliders etc. to control these stuff.
I know it is not as easy as it sounds but I think most part of the work is already done.