I often include a table of coordinates in my layout just below the legend.
Since this is usually in a map series, and the legend displays dynamically just the content of the current page, there is a differing amounts of space between the legend and the table. This is especially annoying when the table is quite large and could use the extra space very well.
It would be neat to be able to "integrate" (for lack of a better word) the table in the legend, so that it moves up and down dynamically with the legend content.