just a thought: Sea defense would be like Walls for the sea, so if there is a ship bombarding you could fire your cannons right back at it causing a small amount of damage (pretty unrelistic you would simply just sit there taking a pounding from a boat). maybe make pillaging ships immune, im not sure Inn's have been instrumental in building communities (and destroying them lol) throughout history. maybe a +1 smile from wine, +1 unhealth or something similar. that or a general +1 smile, +1 unhealthiness as would allow you to ballance the two earlier on if you had angry cities that were healthy. would just be cool adition to medieval onwards. havent really put too much thought into these but what u guys think?