In my opinion, the Countach or even the DeLorean had a design aesthetic that felt like a pinnacle that we've since strayed far, far away from. I don't want a bar of Dial soap. I want a sci-fi dream.
I'd like it if cars came as a kit you could heavily customize, like a PC. Maybe with the simpler construction of EVs this will become possible. I know I'd put a lot of attention into it.
As vain and unimportant as it may be, appearance is my #1 most valued trait and deciding factor when I buy vehicles. Everything else is secondary.