It would be cool if you could get a notification if a book you have in the “Wishlist” or “Owned” categories gets a book club (link).
I think it would be nice if that was on by default (promoting both that functionality and book clubs), but you could easily turn it off in the settings or from a notification.
Maybe it would also be useful to put a constraint on the level in the options, e.g. “Notify me of book clubs up to level X”, although I feel like you could easily forget that it’s there and miss out on notifications when you get better, and I don’t know if it’s needed in the first place considering that it’s unlikely that you’d get tons of those notifications anyway.