I'd like to suggest/request the ability for a floating image view window. By floating window I mean: have a command (like by pressing Ctrl+1 or whatever) that makes the current image you're viewing just float on the desktop, without the window (borders, toolbars, background color, etc.) that surrounds it. It can be "always on top" and you can drag and resize it with the mouse. It'd be very useful to me, sometimes I need to have an image seen on my workspace without it taking the extra space of an entire window.
