I think there are 2 main reasons for that: lack of terrain elevation and simplistic buildings. I'm not planning to address the latter right now, but the former will be the main focus of the further development.
Do you think you could include an option for people to use their own buildings that they make themselves instead of using the default buildings you provide?
Currently I don't see a way to do this, because I can't use a regular 3d-model, I need something that can be "intelligently" scaled to fit an arbitrary rectangle.
