It was suggested I post this here, so here goes.

I've created a Gimp brush for doing painting in buildings on maps. When paired with my CityBrush.gdyn dynamics, you get a nice array of scaled and rotated houses as well. Here's a view of all 81 buildings:

Click image for larger version. 

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Is this something you'd consider useful? Should I make more?

Let me know what you think.