Previewing is a big part of creating content, and people are currently very confused by preview being shown in the back-end instead of front-end.
The meta tools we present users; menu, revisioning, authoring information are cumbersome and often result to conflicting mental models.
Text formats are still somewhat of a mystery to most of our users, they miss a WYSIWYG editor.
The lack of a common workflows like save as draft is a disappointment.
Tools for moderating content are almost non existent, our filters are hard to use and search is non existent.