As a non-skinner I try to stay away from making suggestions for options or capabilities in the software. I goes along way in keeping myself looking like a dummy. 
So, I'm about to make a suggestion, wonder how this is going to work out.
Just recently I've started to use two apps on my desktop that people here skin for, Xion and Clocx. One feature, option or capability that they both have is the ability to zoom. On the surface that really doesn't sound like much but it does give the user a way to better fit the skin into the desktop environment.
Would this be a capability that would be of use with DesktopX?
Granted that it may not work with every skin produced but I believe that it would be a nice option to have.
What do you think or better yet could it possible? 