YouTube Music barely works, is terribly designed even by Google standards, lacks basic features any free music player had in the 90s, and they'll probably shut it down next week anyway.
Which basic features is it missing? And even if it is shut down (it is the result of the shutdown of Google Play Music, and there is no successor, so unlikely in the near future), you'll still have YouTube itself to listen music on, so no real loss there.
Seamless (gapless) playback (that actually works). Equalizer. Cross-fade. Volume normalization. Buttons that react when you click them, not 5 seconds later. Desktop app, I'll even take a shitty electron wrapper. Literally anything related to customization of the application/playback/UI/music library.
If I'm setting the bar too high, just playing audio without freezing or bugging out constantly would already be a huge improvement.
> there is no successor, so unlikely in the near future
What is Google's successor to Google+, Stadia, Reader, Wave, Buzz, Domains, blocklist feature, YouTube Streams, Inbox, Health, Answers?...