I figured the highest levels were docking/defense type levels mostly, but idk there's probably not that many ships. There's definitely probably still residential or commercial type spaces where people can look out at the galaxy.
It's probably a combination of those two things! Because I'm assuming its modular, there's definitely room for both realities. Any given area probably has its own version of these, and somewhere in between. Maybe its time we started designating them, because by now they'd have borders for like 'New New England' and 'Peru Al Sol' and etc. NeoManhattan.