New rant: I like a HVAC fan speed control that immediately responds. Cars and trucks these days have a computer give "soft speed changes" when the controls are operated. I want to take my attention off the road for as little time as necessary, don't want to turn a knob then sit there waiting for a response to see if it's what I want or if I should keep twisting the knob.
Oh yes, and radio knobs that don't operate quickly. When I start my truck, if I left the radio volume up a bit and I want to turn it down, I have to wait several seconds for the splash screen to go away first before it responds.