Suggestion: make windows moveable/switchable like in the window list

Sometimes when you got a lot of windows opened, it can be very handy to organise them, e.g. put all open firefox windows next to each other by dragging and dropping, and to the right of it all evolution windows etc. This is currently possible with the window list, but not for us netbook users who are better of with the window-picker. The windows in the windowpicker are not moveable, and therefore difficult to organise.