TOTD could have died and becoming a seafloor skeleton or its ribs could leat or make an entrance to the new dungeon for the Horseshoe Crab boss considering I doubt that boss is being brought back, if it does tho it could definently get some loot drops instead of a few silver
-Blubber materials to craft underwater armor for the new breathing Mechanic
-maybe drop bone material to craft new arrows.
Could be moved to port fidelio. For example when you get kicked of the forsaken Isle boat or jump off mid transition it could come and kill you.