Your comment to: cram a good ten or fifteen of them into a scene... Leads me to believe that your intentions are to use the design in a battlement scene. The structure itself looks more conceptual than practical, as armament goes, to me. If OTOH one assumes that this is to be permanent living space, then judging from the size of the windows and the entrance door, the rooms inside are quite small by comparison. Shrinking those and providing more of them would increase the illusion of size for the building.