I was wondering, why food is restricted to cities? We have the happiness atribute that goes for the entire empire, and the food wield limited to city? Shouldn't be the opposed? Analysing the real world, we have huge cities with no production at all. Just metropolis inside a complex of cities in a heavy urbanized area. Something that cannot occur in a Civ game. I think each city should have the food needed for subsistence, and the excess food could be spread through empire, or even exported to other leaders. That's how works nowadays. Entire countries export food for more developed ones. Usually, the larger cities are the ones who produces less and import everything. My idea? Have a bank of food. Let's say, the sum of your cities are producing 50 excess food. Then you have 50 food to spread through your empire, via sliders maybe. Maybe this exported food should cost a minor upkeep. Or you could trade this food with another leaders (50 food for 45 turns in exchange for cotton, for example). What do you think?