I was thinking that there could be options to upgrade certain properties of buildings, such as production buildings being able to hold more storage, or to be able to reduce the inputs required to produce the outputs. Of course resources should be required in order to do this to buildings.
Stacking structures would be a good start, but I wanted to be able to add more upgrade options into structures as well.
It may sound complex and odd, but I would like this added to the game.
Best of regards, Wastelander (formerly Architecture), Overlord and Designated Leader of the Earth States.