Just something I thought about:
On my Pc at home I normaly only use my DFP, but I have a Logitech gamepad for my laptop. When I plug that gamepad into the pc "next" to the wheel (for flying games etc) LFS loses its calibration for buttons and axes. It may be nice if one could lock LFS, so that one would not have to readjust everything all the time.

+1.

If i want to use a different USB device i end up having to unplug my wheel as i only have 4 ports, 1 for keyboard, 1 for mouse, 1 for internet dongle and 1 for the wheel, so the wheel is the one i unplug.

Even if i don't use LFS while its unplugged and plug the wheel back in before i start LFS again, it has always lost all the calibration, which is annoying if you go online without remembering to check, get on the grid, push the pedals and nothing happens.