Other than Tributes Peak we dont have an island shrouded in mystery, lote, and generally insightful information about the Sea of Thieves before Ramsey.
I'm taking some inspiration from One Piece's ponyglyphs to create a slight puzzle/treasure hunt.
There's currently what look to be ancient half sun dials scattered about the map already which could be the first steps to this suggestion.
Would be to create a treasure hunt for information regarding Shrouded Shores.
If each half dial had a number, or letter stenciled in skeleton runes, (example) X-4, Y-5, Z-6 = safe route to this mysterious isle.
It would give more entertainment for the adventurous, and more lore for the bookworm I pray.