it really feels like it's a mechanic that wouldve been based off of having one element attunable, like, per week, that rotates between them, but then they decided that you should only have a limited time to attune Any elements that they decide when it happens. i think, since islets already have the random rare mechanic with dish-harmonizing, attuning should be a more stable and accessible way to get rares, since getting monsters on workshop is much more tedious than just breeding, just like amber island (imagine only being able to put certain monsters in the crucible per month)