After the fortress has been defeated, you can raise the flag at the top. After that, the fortress will protect you by appearing ghosts who will be on your side.
My idea:
- conquer the fortress
- raise the flag (maybe for money)
- the ghosts will appear who are on your side.
- if enemy ship chase me, I'll go close to my fortress and the ghosts will only shoot at the opponents.
I mean, the forts are awesome. i just miss some bigger uses than getting money and supplies. and 4 cooking stoves with a map.
Other ideas:
a. after you give the flag you get the key to the treasure vault, the more you give loot then more ghost spawn. reason why players should recharge the fortress. the first ghost would be the captain who also when he dies drops the key from him.
b. the flag could be emissary. it would increase by putting loot in the vault.
c. the flag would be visible on the map for all to see.
d. crazy idea, passive money gain. after you put loot in the vault a new chest would appear which would be worth a percentage based on how long the loot was there + of course the bigger the emissary the bigger the percentage. that chest could be limited to some amount of gold and see it on map when is on a max.