I know that these map pieces are used to gain access to the Omen Islands, and there is a function to read them to pets, but I would like to see another use for them since you can only get them through random events, and the original treasure map pieces have a continuous purpose so why not these as well? It doesn't need to be much! What I would like to see, personally, is maybe letting you play another version of the fishing game with different fish prizes, maybe even old Frey items could be part of the rare prize pool (if this isn't your vibe I get it, but you could at least sell these pieces for more than what they're currently worth to those who like the fishing game.) Or, it could be as simple and it leading you to an unmapped island where you can find Omen Islands themed items and wears.

I'd love to hear your suggestions though if you'd like to see something done with the map pieces, because after you read them all to your pets they just become frag/recycle beast fodder :c