I looked at this map earlier and like many many aspects of it. Esp the 3D feel to the river banks etc. The shadows are strong. I don't mind that but I always find it gives issues when you try to add extra icons to the map or try to blend this map in with a bigger area. Maybe neither of those two would be an issue. Certainly strong shadows are unusual and it does bring out depth in the landscape.

The one area that does jump out to me is the way all the buildings are quantized to 45 degree angles. Can you position them with other angles or is that a software limitation. All the terrain and water look quite natural that the exacting nature of the building lines lend a kind of CAD like sterility to it that is a bit of a shame.