It would be nice to have an easier way to remove a window from a virtual desktop. I know Desktops Explorer will do this, but Desktops Explorer is horribly slow (I'm sure you have done what you can to make it quicker, but it is still slow), and even desktops Explorer only lets you remove one window at a time.
The new facility in Tasks Manager that allows multiple selects to add windows to the current desktop through Available Windows is very nice. How about a context menu for Task Manager's Displayed Windows area that allows removal of the selected window(s) from the current desktop?