It would be awesome to see an easier way to edit permalinks. After I've finished typing a long title, or when I do an auto-post with a plugin, I end up with a permalink that is fifteen hyphenated words long. I know there are plugins out there that will automatically shorten my permalinks for me, but I prefer to choose the keywords myself. WordPress offers only a tiny box to edit your permalink.
It would be awesome simply to extend that box right across the page so you can see the whole thing making it much easier to edit.