So maybe a car got a remodel that ruined it or maybe its market died out, but what concept that was embodied in a car needs to come back?
I'll start:
Type 181
There needs to exist a car that is low-maintenance, capable in soft-roads and can seat 4 adults with the top down.
I think VW could do it, they have a wide enough portfolio of brands that could give it shelter or even start a new, gen-z focused offshoot. Like what Mercedes did with Smart. Or what Suzuki did with the Jimny.
CRX
I think the pandemic has demonstrated that there is space in the market for a lightweight, low-emissions grocery-getter. Not all people want or wish to pedal short distances, and that's fine.
IMHO the problem with the CR-Alpha was that Honda tried to make it "fun". One shouldn't lade projects with subjectives; and because beauty is in the eye of the beholder, so are many other adjectives, let the car fulfill its goals and then, let its buyers and users show the way to "fun".