Think Monolith Burger meets Galaxy Galleria meets Tatooine Bar. The tavern of taverns. An island where pirates can come quench their thirst, swap stories, exchange loot, fish, or whatever the pirate heart desires, without fear of retaliation (unless warranted ofcourse). It's Tortuga, but governed by the Pirate Code of Parlay (Basically this here forum, but actually in the game itself).
If any pirate does not adhere to the Parlay code when within the region of Parlay Isle, either by attacking another player, ship or just happens to help themselves to loot not necessarily their own, their ship instantly receives a Bounty Flag for their indulgences, making them the sole focus of all the other pirates as any who happens to capture and return this flag to the Reaper's Hideout will be rewarded exceedingly handsomely for protecting the honor of the Parlay Code.
[Update] Not sure how this would work, just spit-balling now, but what if the region of this Isle is a central space that is shared between all servers, e.g. once you enter the region of Parlay Isle (like when you enter through a portal to A Pirate's Life Tall Tale) you're transported to Parlay Isle (there is only one which is shared between all servers) and once you exit, you return to your server (or another server maybe?). That way Pirate Isle should always have its fair share of players hanging out there without burdening a single server by luring all its players away from normal gameplay.

