I am using the "attach" feature in the media library to link a set of images to specific pages. Our custom theme displays these attached images in a particular way.
We are setting up Wordpress as a CMS for a client and we don't want them to have to attach images to posts / pages this way because it feels clunky to be editing page, then forcing the user to go to the media section and attach images to that page one by one.
I would really like our client to be able to attach a set of images to a post or page in a manner similar to the "featured image" feature. The user should also be able to add, remove and sort the images without leaving the page.