Don’t think I have any must haves but a few preverables such as-
Auto lights and windscreen wipers.
Heated seats.
Dab radio.
Heated front windscreen
I use the auto boot opening thing but only because I haven’t looked at how to do it manually.
Don’t use parking sensors or cameras, although they are there if I ever need them.
Sat nav on my phone is better so mostly use that.
Lane assist is switched off.
I would certainly support a “motability special” type car where every car has a minimum of what most on the scheme need, (its impossible to cover every need in a car for so many).