Flow and Streaming for Apple Watch Without iPhone

Please can we have a feature on Apple Watch (especially Apple Watch with cellular) [and probably other watches] that allows us to stream and use Flow on our Apple Watch without needing an iPhone present.

At the moment you can play previously downloaded, offline music/playlists on an Apple Watch without an iPhone present, but you can only use streaming and Flow with an iPhone present.  This means you cannot go out (e.g. running, cycling or walking) without your phone and listen to Flow or streaming music, even if your Watch has cellular data.

You can do this with Apple Music, but I really like Deezer Flow (this is the main reason I subscribe to Deezer rather than anything else), however I am forced to either use Apple Music or only listen to offline Deezer playlists when I don’t want to take my phone with me. 

I can do almost everything else I need to (Apple Pay, messages, phone calls, etc.) without my iPhone present, but I can’t listen to streaming music using Deezer.  (I also can’t take photos, but….)