Anyway to hide in-game elements on screen

[Blaaaaaaaah]

ESC > Game Settings > Select Hide Interface (or de-select Interface, I forgot). It's on the left hand side.

Then you can just move your system message box at the bottom right corner out of the screen. You can leave the top tab in the screen so you can drag it back in, since it disappears when you don't have your mouse of over it. xD