Additionally, it’d be helpful to let us sort iCloud Music Library metadata on all platforms, rather than limit it to my desktop computer. On my Mac, I can see whether a song is matched (to Apple Music’s catalog) or uploaded (which means I likely won’t be able to share it), but no such toggle exists on my iPhone or iPad.
There’s also the problem of catalogs: If I subscribe to both Apple Music and iTunes Match, my matched tracks connect to the iTunes Store track library — not Apple Music — and the iTunes Store has tracks that Apple Music isn’t licensed to play. Unfortunately, there’s no indicator in the iTunes app to tell you if an iTunes-matched track is also available in Apple Music: You just have to guess.
My last improvement is a big one, and a feature services like Spotify have already implemented spectacularly: Public playlists are searchable, and can be live-updated when added to a person’s library. Apple has neither of these features at present: You can only share a playlist with someone by sending them a URL, and in my experience, that URL only parses about half the time on iOS and rarely on the Mac. And if that person adds the playlist to their library, it’s fixed in time forever — if I decide to turn Georgia Dow, Zombie Chow into Mikah Sargent, Zombie Ascent, poor Mikah will never know his fate has been sealed.