fishing and coastal cities

-With this mod enabled, you can build cottages, that upgrade with time if they are worked, it also consumes the worker: -Hamlet= +2 gold, -Village= +2 gold, +1 culture; -Township= +3 gold, +1 culture; -Town= +4 gold, +1 culture, +1 faith; -All get +1 gold if they are in a river. -You can build...

To "help" improve coastal cities it will be a good idea that this cities could build "High fishing fleets" that will fish up to 20 hexes from the coastal city base and send back food and gold or production to its base city (always coastal). I think this will not only improve the atractivness of...