everyone has a warehouse but what about the ports it seems like there's 2 billion plus of the resource that the port makes stored there there should be a maximum storage the port can have based on population of the port i think it would be a good idea and would make the game more life like you cant have infinite storage of anything in one city or in one port.
i personally think this would add a new feature to trading because the ports with low population if they have high trade could use up all of there stored resources and then there would end up being nothing to trade there you could still bring in stuff but you could int take it out because there would int be any to trade.
this would add a whole new aspect to trading it would make people watch the port supplies and would encourage people to invest into the ports for other then just a nation capturing a port.
if this has been talked about before just reply with a link to the thread.
sorry about the grammar mistakes i wrote this quickly because im running out of time.