Empty little dot by folder with only unwatched episodes in it

This is probably a tiny feature compared to some, but because I have a small disk I delete episodes after I watch them which means I have a lot of empty tv folders. As I scroll through the list the skin shows a second line of text with “1 unwatched episode” but no indication of an unwatched episode until I get to it in the list. However if there are other, watched, episodes left in the folder I get the little half filled circle or the filled circle if all are watched. So it would be useful to me to have an empty circle by folders that have only unwatched episodes in them to differentiate from completely empty folders (with no circle next to them).