Many roon Classical users have large local libraries. There are many feature requests going back years in the feature request section. Periodically, these have been collected together for ease of reference. Here is a (relatively) recent attempt.
Most of the requests relate to additional file-format support, meta-data handling, search, organization and presentation one way or another. Classical is impacted by these requirements but also other pop genres that share the basic feature of Classical music that it is “cover”, “mix” and “collector” driven. For example EDM enthusiasts often make similar requests.
But I also have a rather different take on this topic. As a relatively new “streamer” (Qobuz) coming from a local library “collector” background the most frustrating thing I find about roon is that the editing functionality available to a local library is not available to a streamed library. For example composition level identification and composition hierarchy editing (WORK/PART). It would be nice to have some consistency especially in “hybrid” local/streamed libraries.