Prefer file WORK title
At the moment multi-part WORK titles revert to generic roon composition titles. There are many scenarios where the works should be grouped but distinguishing file WORK titles should be allowed. For example it would be much less confusing if a Bach violin partita transcribed for guitar has that fact reflected in the WORK title.
Greater composer granularity
Instead of bundling composers, arrangers, orchestrators, transcribers, lyricists under a single “composer” category on the main album page (and various other pages), the various contributions should be distinguished by role. Personally I am not a fan of the credits pages and would just like the option of more detail for an at a glance 360 degree view on the primary pages.
Edition handling
Some way of distinguishing different editions of scores. E.g. Nowak vs. Hass for the Bruckner symphonies or Breitkopf & Härtel vs. Bärenreiter-Verlag (Kassel) for Beethoven.
Prefer file album artist order
At the moment on the main album page, album artists at the top of the page are listed alphabetically by roon. In my file tags I have them listed “soloist; ensemble; conductor”. It would be better to retain this order than re-ordering alphabetically. This convention is useful if you are unfamiliar with the album artists, It also adds uniformity to the pages rather than the artists constantly jumping around as you scroll through the pages. Famous conductors for example will appear before or after the orchestra depending on alphabetical order of the orchestras they have been paired with.
Genres at track / composition level
Not especially a classical requirement but it it is very common to have markedly different genres on classical discs and boxes. For example, vocal and instrumental music on the same disc.