I hate the touchscreen everything that pervades all newer cars AND especially CANbus <hate emoji>. Modern design going back to buttons, knobs, sliders, toggle switches, dials, analog readouts, etc., but modernized electronics/controls would be great. I am ready to sell my RAM and get an old school truck to restore that has no CANbus anything, but has modern engine/fuel management and a standalone programmable transmission. Modern standalone audio that connects to multiple audio sources. Modern standalone HVAC. Basically what I am doing with the two Oldses, but in a truck.
Being an electrical engineer with a love for all things electronic, I now think gadgetry for the sake of gadgetry is a bad thing which is the opposite of what I thought when I was a teenager playing with electronics in junior high and high school. There can be too much of a good thing esp when it comes to engineering.
Maybe as I approach "retirement", I'll start designing some modern/retro stuff for the aftermarket...