I just think it would be so neat to have the system know which part of the navigation you wanted to edit. So when I'm on a landing page that is deep into a website and I click the shortcut to reorder, it will only show the section that I've selected to reorder, rather than showing me the entire site navigation.
It is sometimes frustrating to scroll through huge amounts of navigation terms to find my specific section.
The others could be collapsed perhaps? Or maybe there could be an option to "show all terms" or something?
Just some ideas. Let me know if you have any clarifying questions. :)