I'm very curious to see just how vertical the exploration will be in CP2077, it will def be a bummer if most of it takes place at ground level. I know the devs said there's an ability that lets you scale buildings but hopefully there are various tiered districts higher and higher up. Pretty sure we know about the wealthy district that's high up in the city.
As for the OP I'd love this too but without a many year production with tons of dollars behind it like 2077 it I don't see the actual city design and exploration to be that rewarding. If everything looks the same that's not really that interesting, though once machine learning/AI made assets become more sophisticated in game dev I can see this being the solution to filling out details in one of these megalopolis type environments.