Ive seen alot of PvP server threads so This is my idea

why not keep the pvp in the same server and make a entire area that is like a "super fort/raid" have a mega fort guarded by towers and skeleton ships were the battle is only half way down if u make it to the fort.then the fort is like the others only if u didnt have other ships or people helping it would be extremely hard to defeat. If you go to some islands like mauraders arch or old faithful isle there seems to have been a major fort of some sort there. So imo if people want pvp and people also wanna keep this peaceful alliance thing going why not have a real war/battle to get some serious loot.