book usability

I've been working on a project to make the structuring of content easier / more intuitive. The module was called the Outline Designer and now there's a Drupal 6 version out now. Please check out the demo below and let me know what you think. It implements a bunch of usability things I've been seeing thrown around on here as well as introduces some new concepts (like a context menu). It integrates / overrides the admin/content/book interface to add ajax elements such as deletion, add a child, content editing, and renaming.

Demo - https://elearning.psu.edu/demos/outline_designer/