alt Hacker NewsFirst time I'm seeing it, to be honest, but it looks interesting. I do plan on having an UI for Librario (built a few mockups yesterday[1][2][3]), and I think the idea is similar, but BookBrainz looks bigger in scope.
I could add them as an extractor, I suppose :thinking:
[1]: https://i.cpimg.sh/pexvlwybvbkzuuk8.png
This is great - the service and that you're extending it and considering a UI.
Personally I would go with option 2 as the colour from the covers beats the anaemic feel of 1 and it seems more original than the search with grid below of 3.