I would like to mass edit collections.
I have a TV library that has 246 collections. Yes, I know that’s a lot. 
I have all my music videos organized into one collection per artist, so 246 artists = 246 collections. I’m sure there are other instances where users may have a lot of collections as well.
I would like to edit these collections to add a label, so I can share specific artists with different groups, but I don’t want to do this 246 times.
Along these lines, a “Select All” button everywhere the “Deselect All” buttons appear would be useful as well.
