Awaiting a fundamental solution, a very welcome relatively small feature that would be a tremendous help for a lot of Tidal (and Qobuz?) users, would be to create the following possibility:
When you select a playlist >
Step 1: Put in My Library all the tracks that are not yet in My Library
Step 2: Replace all the non-library tracks in this playlist with the library versions.
This can now also be done manually and more or less track by track, but it takes so much steps and time and effort that it is only feasible for very small playlists.
The big advantage of this ‘replace tracks by library-versions’ feature? Once the tracks in your playlists are library versions, everything works smoothly afterward. Tagging, focus, giving hearts, putting (tracks of) a playlist in a tag, being able to see (on the album page) which tracks are in which playlists etc.