I'm a fan of the skyscraper idea. I think right now you can see a little too much sky for something that feels like it's at ground level, and in metropolitan japan you can see almost no sky. So it would be great if the skywalk/skyrise idea could be made to work.
It *is* a little weird when someone comes into the room and watches you play whilst you're holing up in the bongshop

If i may make a few suggestions about the customer content of the store, i think it looks a bit too westernised. The, erm, nature of the posters and whatnot seems more of a western soft-porn look with asian girls than something you'd find in japan. Maybe more anime/videogame stuff and japanese writings?
Also, since it's a store, it may not be a bad idea to cover the outside walls with storefronts, giving it a bit more of a stuff-filled shopping area feel. Maybe one or two of them can even be a little walk-in windowed alcove looking out, similar to the one in nt_engage.
And again, some of the construction vehicles/trucks near the teams' spawns are at awkward angles and obstruct player movement, but i've already told you taht

sorry if it seems like i have a lot of suggestions. I tend to focus more on things that can be done than what you've already done, so i should say now that it's a great map
