I think, in 3 years time, Drupal will be much easier to use, if they keep doing usability testing every version.
However, the code freeze may cause some issues that surface later to be difficult to fix in core for UX/UI issues, and could possibly have to wait until a later major version of Drupal to fix. Don't get me wrong, I love Drupal, and use it almost exclusively, unless I'm forced to use one of the other CMS's....