Wow, this is really impressive! Super fast, easy customizable towns, I'm impressed! Are they easy to tweak? Say you want to break some houses down, add a big building, a river with bridges etc?

I could imagine this would be even more awesome if you had several other sets so it was possible to have different types of neighborhoods combined. For example, a layer with the outskirts (shacks, dirt roads), one with the city (as it is now) and then another with the city center (bigger buildings, old fashioned).