It would be great if there was a "log out and exit" option along with "log out", as well as an exit button on the log in page. Even though I know how to use alt + F4, which seems to work ok, it's still bizarre to be "trapped" in full screen without any exit option in the UI. Even in windowed mode when you have an X you can click, it would feel a lot better to use an explicit UI option because you know it's being closed properly. There's no indication that it's being closed properly when you do alt + F4 or click the X. And that also brings us back to the issue of not being able to switch between windowed and full screen without logging in first, which now also requires loading into a huge experience.