I understand that, apparently, there's no possible way for FOSE to register button presses from a controller in scripts. But, can it still register keyboard/mouse key presses while a controller is plugged in, since that disables normal usage of the keyboard/mouse?
If so, that would mean that a simple controller emulator program could be used on the controller such as XPadder or Joy2Key to assign various keys to the controller buttons that would do nothing unless picked up by a FOSE script.