Right now curios are not too difficult to make or grind, which is okay- though we are stuck to the same curios constantly (best/worst type of thing)
I feel like in a proper village, one thing that every member should be able to contribute is a supply of curiosities in regards to their own field. They don't necessarily have to be the best, and can be balanced based on their game-stage (Farming curiosities like Straw Dolls are great early, and still good now, but eventually get topped out by smithing related ones), but it would be nice to have less chance-based curiosities and more that can be reliably crafted by each role in a village.
Shrewbread should definitely make a comeback, fishers can often get fishy eyeballs, smithies have a bulk to choose from, foragers as well. Cheesemaking sometimes yields the Perfect hold- but hopefully there could be something in each general area (Cheesemaking, steelmaking, silk(silkribbons), silver/gold crafting, bakery, etc) that can be created.
It's mostly about variance, and though later/harder crafts should probably be worth more/better LP/hour than earlier ones.