Hello.
While checking my collections, i found that the way it indicate that you have an item for the collection in your inventory isn’t very visible : it’s just a bit darker but it’s hard to see. I would be pleasant if it was a bit more visible.
Second point, when you’re in a map and you want to see if you complete the associated collection, you have to find it by reading all your collection. It could be cool if the collection of the current map was somewhat enlighted to make it easy to find.