Conclusion

We all know that Plone has lots of awesome functionality built in. However, if your very specific use case is not covered, it is not hard to customize something similar to get exactly what you need.

This tutorial describes the process taken to build a drag and drop slide sorter, starting with the folder_content's drag and drop functionality as a base. 

I started by fiddling with the existing page template. When it became apparent that this was not enough, I looked to make a few small changes to the javascript. The majority (if not all) of the core Plone code is very well written and easy to understand. By digging around a little, it is easy to find exactly what you are after.