Instead of adding unlimited Farms and Mines, why not to create one single Farm District per city instead of dozens of current Farms (by simply dropping Farms completely)? And to limit Mines ONLY on currently allowed Resources? The map will definitely will be "ligther" to process and manipulate and more place will be opened for other Districts. If yes, than to develop more in depth ... Farm District (one per city, same rules as for any other District): - allowed to be build on Hills immediately, as well as in the Ocean or Lakes. - on water can be moved out of borders of city in any non occupied place in water! Kinda like Mobile Ocean Farm. - new buildings could be added, like modern Greenhouse, etc. Mine District (one per city, same rules as for any other District): - Mine (not Industrial District), but actual Mine District. - The main purpose of Mine District is to increase the amount of Strategic Resources (except Horses) per added new mine buildings, processing plants and equipment. And now, really freaking feature: Mobile Mining District. - can be placed on any Resource that is not occupied by any city, at all. - can be placed on any Resource of Allies, if ally allows it in trade agreement. - can mine any Strategic Resource + some Bonus Resources like copper, stones + some Luxury Resources like gypsum, silver, marble. - etc, etc, etc.