Nice addition, should be in core

I would give it more stars but for this little glitch:
This brings up the WP 2.5-style Gallery Editor, which is actually what I like BETTER than the NEW WP 3.5 era Gallery (where your shortcode MUST contain a list of image IDs). The old style Gallery Editor lets you assign numbers to each of the image attached to a Post or Page. The only hitch is that the old style Gallery Editor is slightly broken; the numbers in that box are not really visible (though you can still drag the thumbnails around to change the order). This is no fault of the Gallery Metabox Plugin, but maybe someone could just go ahead and add a way to drag around the order of thumbnails within the Gallery Metabox itself without a trip to the old style Gallery Editor.