1 Ability to see ships before buying it, maybe a simple preview of the ship in port before buy.
2 Different types of cannons. Steel, bronze, brass type.
3 A navigator officer telling you, your pin point location on the map.
4 an ability to upgrade a port, very pricy but able to buy more def towers, patrol ships, upgrade gold mines, silver mines and just upgrade the town itself.
5 Bounty hunting, ability to place bounties on players.
6 Pirates able to join in any port battles giving them the ability to be hired as hired guns for port battles and join ether defenders or offenders.
7 Ability to change your sail color, White, black, red or striped colors of White,black and red. or designs. Cross, iron cross, Templars cross, skulls, lions, dragons, so on.