in POTC movie jack has to pay tax to dock. i was thinkin it would be kinda cool that if you were in "bad relations" with a certain country, they wouldnt shoot at you if you came into their port but when you dock, there is tax collecter guy waiting for you on the dock. he would ask for 2 gold or something, and your name. if you tell him your name and you are bad with them, then the screen would change to the ship and you have to escape while the fort, ships, whatever fire at you. but you could lie to the guy and tell him a fake name (like Smithy) and you could stay on the island.... but since you are keeping a low profile (or for some other reason) you still cant use the city's shipyard etc. maybe if you have a high luck skill you can steal your money right back. anyways, I think its a good idea.