More bleed from the analysis to replace the Mk2 Golf GTI's wiring with a LINbus-based network.
While describing the operation of electric windows[1], it quickly became obvious that tactile and animated feedback would be not just really nice, but also quite useful. So instead of having just a passive rotary encoder on the control knob, one embeds a stepper motor into the control knob.[2]
I confess that that isn't the simplest way to control electric windows. But perhaps it's the simplest way to do it nicely.
[1] [2]Why are outer-rotor stepper-motors so hard to find?