Early 2021 clean-up: well… that one deserves some reaction/more detailed response 
While there’s a lot of stuff in this suggestion that’s not yet available, those features are described in existing suggestions which have a wider attention from the community. This is probably due to the fact that you posted quite a conclusive suggestion which many users either don’t read to the end or don’t agree in every detail.
In order not to let this stand alone (and plainly closed), I’ve tried to summarize what can already done with Plex and where to find those other suggestions.
Described Features
-
Playlist filtering → implemented (custom filter & save as smart playlist)
-
Composer → duplicate
By Composer -
Metadata fields (see below → mostly implemented or duplicate requests available)
Track
| Suggestion | Available in Plex |
|---|---|
| Title |
General > Title
|
| Album |
General > Album
|
| Artist (multiple entry) |
General > Artist (single entry) – there’s a separate feature suggestion to allow multiple entries |
| Rating |
General > Rating
|
| Genre (multiple entry) | separate feature suggestion (actually one of yours) |
| Composer (multiple entry) | separate feature suggestion |
| Track number x of y |
General > Track #
|
| Disc number x of y |
General > Disc #
|
| Language (one of the choices here should be “instrumental”) | I remember having seen a feature suggestion to allow filtering for the track’s audio stream language same as in movies/shows – however I cannot find that suggestion at the moment |
| Comments | not available! |
Additional field available with Plex:
-
Tags>Moods
Album
| Suggestion | Available in Plex |
|---|---|
| Title |
General > Album
|
| Title Sort |
General > Sort Album
|
| Album Artist (single instance) |
General > Artist
|
| Year |
General > Originally Available (full date) |
| Rating (for the entire album) |
General > Rating
|
| Genre (a non-editable field…) | |
| Language (same idea as album genre) |
Tags > Genres (editable) |
| Compilation |
Tags > Compilations
|
| Comments (for the album as a whole) | not available! |
Additional fields available with Plex:
-
General>Record Label -
General>Review -
Tags>Styles -
Tags>Moods
Artist
| Suggestion | Available in Plex |
|---|---|
| Artist |
General > Artist
|
| Artist Sort |
General > Sort Artist
|
| Artist Genre (a non-editable field…) |
Tags > Genres (not aggregated and editable) |
Additional Fields available w/ Plex:
-
Tags>Styles -
Tags>Moods -
Tags>Country(actually countries) -
Tags>Collections -
Tags>Similar Artists, Biography
