I would like to extend this request a bit. Make it a virtual fencetop? 
A fencetop would just be a fence layout. The context menu for icons should contain an added choice od "Always hide on this fencetop", and the regular desktop menu should have an option to "show all hidden icons".
Then add "Add fencetop" and "Remove this fencetop" options, and a menu to switch on the desktop context menu. And as a shortcut, hold down right mousebutton and scroll the wheel to switch to next/previous fencetop.
(Incidentally, I would like the "Always hide this icon" feature, even if fencetops never are implemented... Sometimes I don't want to delete icons from my desktop, but still have them readily available by switching a "show hidden" flag.)