Nice going, Omri

This suggestion comes a little late, given that you have already done nearly half your city, but how about a bit more variation in size and shape of the buildings - T shape and L shape houses? Or buildings that are either noticeably larger or smaller than the average house? I know the larger more complicated buildings are more difficult to draw (I'm having the same problem with my city right now), but a couple of those mixed in with the rest would make the city even more interesting to look at.