Is there a way to run the plugin so as to ONLY add the Goodreads ID? I see that I can deselect some of the metadata fields:

...but I can't deselect title, author, etc.
("Why do you want that? That's weird."
"Because I have lots of books with good clean metadata and no Goodreads ID, and I want to improve my Goodreads Sync. Particularly, the Goodreads practices around titles are not my preference*.")
((*Series in the title field is a
terrible hack and often mangled, and I also prefer not to have the extended title in Calibre. (E.g. for goodreads:45358322, I'd rather have "Sizing People Up", not "Sizing People Up: A Veteran FBI Agent's User Manual for Behavior Prediction".)))