Keyless ignition and backup cameras are the two recent tech features I think are worth having. Though the latter would be less necessary if cars had better visibility, but even then it’s still useful for things you couldn’t see in any car.
I will also keep power windows, steering, and seat adjustment.
I am not aware of any exceptions. I was speaking generally though about what I believe are car tech innovations that truly are improvements (unlike, say, touch screens).
I will also keep power windows, steering, and seat adjustment.