The TIDAL integration has gotten much nicer with Augmented Library and Universal Playlists.
However, I would like to expand my existing TIDAL playlists with the music I have stored on Plex and the only way to do that at the moment is to manually add each song to the library playlist (which, for a long playlist, is NOT fun).
It would be nice to have a one-click solution to add a TIDAL playlist to your PLEX library, as you can already do with Artists and Albums. Just a simple copy will suffice (no need to actively sync for any first version of this functionality).