My primary source for books is Amazon. Kindle books from Amazon do not have ISBNs, and Goodreads can work much better with Amazon's ASIN when searching and matching, etc.
When performing a batch search, I find that the plugin never matches anything automatically. I had to manually search and select for thousands of books. Is it possible to support or default to using ASIN as the relational database primary key?
Also, it would be really helpful to support "fuzzy search" when matching Goodreads books to Calibre books, then just present a table of fuzzy searched results for confirmation if it can have secondary options in a dropdown menu, that would be even better.