Sub Categories in the Libraries (NOT Collections)

Collections are not very useful, and are difficult to access from interfaces other than computers.
I think Plex should support a Tree Structure in the Libraries List.
For Example :

MOVIES
-Ultra High Definition
-High Definition
-Standard Definition

VIDEOS
-Music Videos
-Home Videos
-Documentaries
-Tutorials
-Nature & The Natural World
-Scientific
-Sporting

MUSIC
-Dance
-Classical
-My Favourites

This tree structure should be at least 2 levels deep (1 Parent, Many Children)
3 or 4 levels deep would be even more useful.

this feature request is a duplicate
closing

if this is a duplicate - you should at least leave a link to the original post so i don’t have to spend another half hour finding the same request (??!)