goScreen does away with the full screen preview and instead replaces it with a sidebar that is docked on the left of the screen by default but is configurable and closeable. Instead of showing the actual application or window, goScreen simply displays the icon and window title. The user can still drag and drop applications between desktops and clicking on a desktop will activate that desktop. Also, clicking on an application will display it's parent desktop and bring that application to the foreground.
Screenshot of goScreen interface by Wally Bahny for TechRepublic