I kind of disagree with the street width. Cartography is the art of reduction while keeping the information, it's totally allowable to reduce the thousands of different street widths into just one or two. Also the trapezoidal buildings are allowable because the environment is forming the shapes, it angles just shouldn't be too big or low. Triangular buildings on the other hand mostly occur in towns with high gradients and are not a good match to seaside cities. There are too much of them in this map.
I think it looks very promising.