Five Things the Enlightenment Desktop Does Best
Fair warning, I am a huge fan of the Enlightenment desktop. The following items in this post are things I believe the Enlightenment desktop (and it's developers) are doing better than some of the other open source desktops.
Maintain Old Releases
People are always resistant to change and switching your desktop environment is a major change. When KDE and Gnome both had their last major releases they promptly dropped their previous releases like a bag of bricks. The Enlightenment 17 desktop, while still in development, has been stable and ready for use for a long time now. Even so they have team members that maintain their older E16 release. It is still used (and liked) by many and there are no plans to discontinue it any time soon.