Feature request: Possibility to tag Box - Sets in a meaningful way

There are more and more Box - Sets that contain CDs that have their own album name. For example, the box set of ABBA with the title “The Albums”.
This box set was released in 2008 and contains all the eight original albums of the group with their original title and their original cover plus a bonus CD.
Now it would be good if there were four more tags for such box sets:

  1. BoxSetName
  2. BoxSetYear
  3. BoxSetDiscNumber
  4. BoxSetCover

In the display it would be useful if all albums of the box set would be shown only when you click on the box set.
The advantage would be that all albums of the box set could keep their original titles, covers and release dates.