This is a minor gripe and mostly just an aesthetic thing.

Is there an easy way to manipulate or change the size of the entity that takes up the 3x3 square to make it just slightly smaller? There is some spill over on the left and right side (and bottom that almost takes up more than half the square below it) that overlaps with other buildings. I think if the building were scaled down even slightly to fit better within the 3x3 square, it would look a little better and feel more like a 3x3 building. Right now, it kind of feels almost like a small 4x4 building squeezed into a 3x3 space.