https://github.com/internetarchive/openlibrary/issues/new/ch...

The importer is a new project (as of August this year) and I think there's a lot of opportunity for improving it (including importing missing records on demand).

Other hat tips: I also want to call out the great work of https://inventaire.io, another great project in the space which uses wikidata, as they also have a goodreads import which we're learning from. Another project I'm excited about (which has goodreads import) is beta.thestorygraph.com. Not sure the status of its source code but I heard an interview from the founder and she and her work so far seems great.