Condense Master Features in Features View

A master feature may contain many sub features. When looking at the Features view on the Features Board. i would like the ability to condense all features that exist within a master feature - so that just the master feature is shown. Expanding would then show all sub features. Reducing clutter of features board when wanting to see Master Features (without detailed sub features) , and Features (not included in a master features) on the same board.