I would love to see a way to further filter or flag favorites - either allowing users to create their own categories, assign them to favorites, and filter by those categories.  Or, add a few simple flags - one for ATF, to distinguish your ATFs from other favorites, and one for "wish list" or something along those lines - to distignuish ladies that you want to see from ladies you have seen, and the ability to filter by ATF vs. Wish List vs All.