I haven't actually divested any books through this exercise (yet) but I did spot some that are on the drop list. For now, I'm happier with the arrangement.
One of three bookcases in our living/dining room. From this:
The top two shelves are now displaying some very old books, mostly family relics, along with some other family relics. The second shelf from the bottom holds a 1:12 scale miniature room ... that shelf *used* to be full of books, so that is evidence of ongoing success in divestment.