I've made a number of product suggestions over the last 30 days (30 suggestions over 30 days with this one π) that involve "other" measurements and how they are outputted.  I think I have one today that has the potential to address a number of my previous suggestions in one improvement.
An "Area" markup can produce 4 different measurements: Length (perimeter), Area, Volume and Wall Area.  All can be displayed in the markups list in the "Comments" column, or individually in specific columns, if those columns are chosen to be displayed.  However, the "primary" quantity will always be "area" - even if you don't have area set to be displayed.
My suggestion would be to add an option to select the "primary" quantity through a choice check box on the Measurements panel, similar to how you can choose what measurement to display on the markup:
    
        
            