New answers tagged design
Alex Hill at Detroitography has a series of Hand Maps for Detroit: http://detroitography.com/tag/hand-map/
As an alternative to ArcMap, I just installed ArcGIS Pro 1.1 which now supports extent indicators. In my first test of using leader lines I created the style below which I don't think could be done out-of-the-box using ArcMap. There are various other styles and options to experiment with there.
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