True, waiting for an update! This plugin makes the default build in gallery a liiiittle bit more useful in the backend for customers… We all know that they are lazy and wanna see before read instructions…
I actually like the OLD interface from pre-3.5 for Media Manager: It lets you put a number in for the images in a Gallery that are uploaded to a particular Post. And, it works with the MediaTags plugin http://wordpress.org/plugins/media-tags/
which seems to have trouble in the 3.5+ Media Manager.
Maybe offer a settings panel to give you “classic” vs. “current”?