FWIW, I am the author of a couple of record guides. As much as I love Roon (and I do I made a “lifetime” commitment), I cannot believe that there is no option to add my own reviews and biographies or weblinks to my music database. Plex has it, quite nicely I would add, and while I do enjoy what metadata Roon provides, I would be over the moon to be able to add my own, to my music library, and even perhaps share with others.
This really doesn’t seem like that difficult an implementation, just perhaps a table and a couple of rows to a database and the “Prefer My Own Data” switch on the artist/album. etc.