As it stands today, there is no direct feedback in the UI for the user to know what Unit Scale your scene is set to. The only method to discover the Unit Scale is to go to the Customize Menu, select Units Setup and click the System Unit Setup to reveal the current Unit Scale.
Therefore, I propose a UI element be added to the Coordinate Display area in the lower right of the 3ds max application window. This should not only display the current Unit Scale, but the user should be able to click on the Unit Scale icon and open the System Unit Scale window to make a change as well as a popup menu to select the Display Scale.
Even better, I would recommend that all the Unit Scale, Display Scale and Home Grid options should be grouped into one palette or window.
