I am wondering if there is a way that admins or users could create albums from existing photos in categories. The albums would be then visible/linkable to any page visitors. It would be something like albums on the Airliners.net gallery. Users could create multiple thematic albums and add images to that album.
Its not really the favorites function, because I think you can only have one favorites per user, you can not name it by group and I do not think that a users favorite list could be visible to other users.
Am I right to assume this would have to be custom developed?