What if there was some giant triangular rock that had a space in the middle that you could sail through, and a portal was activated in it that lead you to a dark themed temple half way submerged in the water with puzzles and bosses and traps to go through and try to survive, and lots of treasure inside of course.
But in order to activate it, you had to find either 3 or 4 keys in the entire world map per server that are randomly spawned in wierd places like how sometime we find loot on islands we come across. This will most likely encourage both alliances and/or robbery of other pirates to try there chances at this temple raid, stealing the keys or working together. Once the portal is active, it stays up long enough to let others have a chance to sail through it if they are far away too. But once it closes you have to find the keys again to re-open it.
That way people will have a chance to the temple, kill their allied/enemy pirates and sink their ship to grant a time limited safety from others until the portal is opened again. Maybe make the keys not so hard to find but it's still random to find one.
I have no idea about what kind of loot and whatnot that you should get but I feel like this would be something awesome to see and fight for in the future after this massive update at the end of this month. :)
(EDIT) I forgot to add that maybe like when the portal to said temple raid closes, the keys like just plop to the ground to pick back up to put back in to open it again. Then when the said Raid was finished and completed, the keys disappear and another portal form the I side pops up somewhere, idk where in the map but definitely random in whatever area, I'm not picky. :)
