For the past couple years I've wished LessWrong had a "sort posts by number of pingbacks, or, ideally, by total karma of pingbacks". I particularly wished for this during the Annual Review, where "which posts got cited the most?" seemed like a useful thing to track for potential hidden gems.
We still haven't built a full-fledged feature for this, but I just ran a query against the database, and made it into a spreadsheet, which you can view here:
LessWrong 2022 Posts by Pingbacks
Here are the top 100 posts, sorted by Total Pingback Karma
I just updated the spreadsheet to include All Time posts. Lists of Lethalities is still the winner by Total Pingback Karma, although not by Pingback Count (and this seems at least partially explained by karma inflation)