My bouts of wanting to build a competitor usually arise when I'm trying to find something I'd assume would be a feature and isn't, and I'm having a hard time re

My bouts of wanting to build a competitor usually arise when I'm trying to find something I'd assume would be a feature and isn't, and I'm having a hard time remembering everything, but: 1) I desperately want a feature that'll show me the books most-reviewed among my friends, or highest reviewed with >X # of reviews. You can see what individual friends have reviewed, but there is nothing I've found to aggregate. 2) More reading stats (right now it shows number of books, and total pages at the end of the year). I wanna see breakdowns of categories, authors, fiction/nonfiction. 3) I had an idea for per-book or per-series wikis that have spoiler-bracketed info. E.g., [spoiler b2p300 "King Soandso is murdered by Assassin Soandso"] would show in a book wiki if you are past book 2, page 300. I read a bit of fantasy and have a tendency to want to google 'who is x', but that is fraught with spoilers. This is a feature that could exist as its own site, but I think it'd be a good companion to a goodreads-esque site. 4) Book Discovery seems super weak on Goodreads and I feel I could build something significantly more useful.