The game plays awfully in 1024 x 768 resolution since the interface blocks half of the screen. So the player is often forced to close it often. My suggestion is to add another functionality on the right click.
If the build/train/whatever screen is open, close it. Else close the bottom interface to free up some screen space. This saves player's time from hunting the "back" and "X" button to close the interface.
If the build/train/whatever screen is open, close it. Else close the bottom interface to free up some screen space. This saves player's time from hunting the "back" and "X" button to close the interface.