I was thinking it might be convenient to add the size of how much space an individual media item and/or media folder/group is taking up.
-Random Movie 1 is taking up 9.5 GBs
-Random Show Season 1 Ep 1 is taking up 6.3 GBs
-Random Show (Seasons x - x) is taking up 107.6 GBs
This could go at the very bottom of the info section like after the "Path" info sub-section.
Just a thought though, it might be better or more streamlined ways to implement this.