Unrelated, but all I want is a letterboxd for books, with the light social aspect, the ability to log a read multiple times, and with a great interface. I read my hope for this into the title of this post, unfortunately.
If you want to join the beta, just email me at ben@bookdna.com. We've got about 100 people using it right now.
We are working on goodreads/storygraph imports, and then adding folders. It already supports multiple reads and more.
It uses ActivityPub, so you interact with Mastodon and stuff, if you are into that.
I used LibraryThing a bit ago, but now I have a note with a list of books I add to regularly.