Action Blocks Addon- Animation Node Graph
Action Blocks is now available on Blender Market!!! Its an addon designed for animators of all sorts such as those working with mocap. It combines the concepts of Blender's 'Actions' with Mechanim to make the most out of re-using Actions. Use individual Actions to create larger more complex ones. It includes Root Motion and Shape Key support.
I think animators who have worked in game dev will find it especially intuitive. blendermarket.com/products/action-blocks