Would it be impossible to implement a button that worked a little bit like the mirroring button, but instead of creating a mirrored copy of the fixture on the other side, it moves the actual fixture to that position?
In the older days it would have been a bit pointless, but in the days of interiors it could make for an easier change from LHD to RHD when you could just press a button to move pedals, steering wheel etc. instead of having to move them manually.