Hi Mitch,
Welcome back! I was waiting to see more of your large project. This works by presenting the view with an incessant series of still images through which one builds in one's brain a virtual city, throbbing with motion. Although there are individual images which are impressive, each on their own merit, not all have the same power. It's the presence and sequence of the changing scenes that make us feel we are there as observers.
Now I have gone through every one of your photographs on your website. There's a lot, but I am an addict I guess. I can see the book is getting closer. The form and quality of the book is going to be critical. If that is presented well, the experience is going to be really satisfying.
You're fortunate to speak the local languages and be embedded in the city. That way you are not reporting on what tourists think of BK, but rather how that endless stream of people walks, works, buys, sells, eats and makes the city function. Mostly they appear to be unaware of you.
This is not the colored tourist vacation snapbook to show the well known sites and hospitality of the city. Rather it's one person's perspective from the other side of all that. This is the harder to admit part of the photographic possibilities of BK. Your photography may therefore seem somewhat harsh. That would be a misinterpretation.
More specific comments will follow. For now, commendations!
Asher