I’d say that for me, search needs to be improved. A lot. It seems pretty good for well-known artists, but it’s not tolerant enough of mis-spellings of artist names. (Searching on “Winton”–not Wynton–“Marsalis” yields a couple of Tidal results among a bunch of unrelated stuff, but nothing from my library.) For some reason, search seems to do much less well for titles. Composer search is inconsistent; I’ve got a lot of music by Franz Schubert in my library, but searching for “Schubert”, then clicking on “Franz Schubert” (Artist) yields just two library albums and three Tidal albums. (Just to make sure, I checked “File tags” for several works that don’t show up; they show “Franz Shubert” as composer; presumably Roon is using Roon data not file data here, though I didn’t check.) And why am I getting a “performer” listing for Franz Schubert anyway, with seven results (none of which, obviously, feature Franz Schubert as a performer? The only time Franz Schubert should ever show up as anything other than composer is when his name appears in an album title (“The Schubert Connection”) or, say, the name of an ensemble. (It’s worth mentioning that in this context, “Artist” just confuses things. In a music performance, what does “artist” mean? Is that the performer? The composer? The only way this could work is if “artist” means “all of the above,” but that doesn’t seem to be the case.)
Finally, especially for an app that aims for a rich (enriched) experience, broader search results are frequently disappointing: Search on “jazz cello” and the results hardly seem curated: two albums by Ray Brown (fine), a couple of Claude Bolling works (yuck, but OK. One features Yo-yo Ma; great cellist, but not for jazz), a couple of novelty acts, and a bunch inappropriate results (“Christmas Cello;” “Cello Relaxing Cello”). Avant-garde cellist Erik Friedlander has 12 albums on Tidal–I am a Tidal subscriber, and it’s linked to my Roon account–but does not appear in the search results. And several historically great bass players also performed on cello–Paul Chambers, Oscar Pettiford, Charles Mingus. No Dave Holland, no Esperanza Spalding, but plenty of “Girl Crush (Cello Version)” and “Cello Dreams” (Various artists).
Schubert composed 600 songs in his short lifetime, and Tidal has, by my count, 49 versions of Winterreise alone, and I have several versions in my library. But searching on “Schubert lieder” yields NONE of those; instead, I get “The Art of Frieda Lieder” and “Lieder Gut!” by Willi Herren. (In fairness, among the 42 album results are a handful of actual Schubert lieder albums.)
This probably is challenging, since enrichment relies on outside sources and metadata you don’t control, but it’s also the key to realizing your vision, as I understand it. If you want to enrich my listening experience, show me interesting new things related to what I’m eager to listen to.