It would be nice to be able to bring up a window that shows the positioning order of your map elements.
For example, when I am creating a legend and adding an element to my map to give a legend item a background color, I sometimes have to send this element to the back of my map document ("Send to Back") and then click "Bring Forward" over and over to get the background element color in the right order. If you have a lot going on you may be clicking dozens and dozens of time to get it in the correct position. This not only applies to legends, it would be useful when dealing with any sort of map element.
It would be much easier if there was a window you could bring up that showed the order of all the elements, then allowed you to drag and drop selected elements to change which order they appear, just like you can with layers in the Table of Contents window.