I'm working on a long LaTex doc and have been working in fullscreen. However I feel I get distracted and bothered by the menu bar and close button that remain visible even when in fullscreen mode. I feel that it should be possible to remove these as a customization option (maybe we can keep the scrollbar for now). Then if the user sets the option to hide everything, forgets the shortcut to close and gets stuck on fullscreen mode that's his own fault for having customized it that way. However I think this is a big plus for a tool which is already a wonderful utility.