WP Super Edit 2.5 is not quite the rewrite I’m hoping to accomplish, but it does make things compatible for WordPress 3.9.1. I’ve completed some of the work needed to make some future changes, removed some old cruft needed for the previous versions of TinyMCE, destroyed most of my experimental code, and made the needed changes to support TinyMCE 4.0 and WordPress 2.9.
Always remember, this plugin was designed to help my editors at Nicholls State University, so the focus as always been to assist them in keeping that website up-to-date. It’s been tested for my personal sites and the multisite sites I administer. WP Super Edit may not work for you or contain the features you really need.
You’re more than welcome to leave notes and bug reports here, but I really suggest you post things to the WordPress.org WP Super Edit support area.