Bojhan Somers is the User Experience Maintainer for Drupal 7, and reflects upon the Drupal 7 User Experience (aka D7UX) process since Drupalcon Boston when Mark Boulton and Leisa Reichelt were first starting their design and usability work.

There are still a number of active usability issues from the exception list being worked on in the code "slush" phase of Drupal 7 such as Admin Overlay & Edit anywhere that Bojhan talks about.

For more information, check out the retrospective on the D7UX process that Bojhan wrote up.