Available desktop wallpapers should be the same in GNOME and KDE.
We should also pick a common directory for desktop backgrounds. Right now we have kdeartwork - /usr/share/wallpapers and desktop-backgrounds - desktop-backgrounds.
Changing "desktop-integration" whiteboard to "desktop-milan", sorry for the spam...
Common directory established in desktop-backgrounds package, but need to point things at it, such as Nautilus tile browser.