I want to introduce a new idea. I think it would be useful, if there are forces that do not enter the area of defense systems. This forces should be easily destroyed and cause medium damage. They should fall can not recognize, and so, for example, infrared towers can not escape. If all buildings were destroyed out of defense systems, this force should not move, are again building there are outside of defense systems.
I apologize if this text is not entirely correct . I'm German.
