Would it be possible to have a maximised windowed option that hides the OS taskbar? While the fullscreen option is great, if I want to be able to alt-tab or use my second monitor, I need to quit the game if I'm using it. Admittedly it's a low-impact feature and thus by no means a priority if it's at all difficult to do, but it'd probably be a much more convenient way to play full-screen.
(This option would have to lock you into your desktop resolution, too, I guess)