Display favorites in numerical order/by image name, not the order they were added
Clients choosing favorites for their album is made difficult and confusing for them because the images within their favorites selection are displayed out of chronological order. Also some images cross over into multiple categories (i.e. the same image is uploaded twice, once in two different categories), and if the client favorites both of them and then wants to unfavorite, it's really hard for them to find both copies within their favorites folder to unselect. Problem solved if the images are displayed by filename! They'd be easy to find and any duplicates would be right next to each other.
Or! Give the client a sort feature within their favorites folder i.e. they could choose between display in order added, or display by filename