The Pirate Lords Legacy (An added End Game)

I'd love to see a huge Tall Tales type quest for Legends to add variety to the end game.
It turns out that the grind to Legend has a deeper reason. The pirate Lord is looking for pirates worthy enough to embark upon his legacy. A huge treasure trove hidden somewhere in the Sea Of Thieves.
The quest would start by getting aboard the Athens Fortune and sailing through the waterfall, your boat would materialise coming through one of the island arches. The ship must be completely crewed by Legends
This would trigger certain NPC dialogues to become available to the crew. As per the regular Tall Tales a new mission type "The Lords Legacy" would appear in your reputation screens. The end game RPG would take aprox 30 hours to complete and longer if you took part in the side quests. The quests would be akin to that of Tall Tales but the riddles and clues would rely heavily on your knowledge of SOT, the Tale Tales, lore and knowledge of the Geography and be much harder that any quests done before
During the voyage your boat would be skinned as The Athenas Fortune, making the journey far more perilous as it would make you a target to other pirates wanting to try their luck against a galleon of Legends
If you conplete the RPG and make Athena 10 yoy unlock the title "Legend Lotd"