Bump.
This is a real issue if planning to add a bunch of advanced customs fields to images for content creators to enhance image data. Once they have inserted the image into the post, there is no way for them to edit that data without opening up the media library, finding the image and editing it there, which is not really tenable, first because it is a atrocious workflow, and secondly it is an advanced step to teach content creators, especially on blogs with multiple editors/authors who aren’t tech/wordpress savvy.
