Wow. That's a great map...I really like the style. The only things that jump out at me are 1) your market could be a little more active, and 2) your L-shaped buildings would look better IMO with "flashing" (or whatever it's called) along the ridge on the exterior bend...I looked around a bit and it looks like all other ridges have them. Have some rep, because this is really pretty!
M

Edit: Oh, yeah, and trees and bushes...but I assume you just haven't gotten to them yet.