How is that different from https://news.ycombinator.com/bestcomments?
/highlights is a manually curated list, designed for overlooked gems. If you or anyone notices an overlooked gem, from now or any time in the past, please let us know at hn@ycombinator.com and we'll add it!
From my perspective, a 'gem' would be a post that has something rare and interesting about it, and perhaps also touching or beautiful.
(Methodology/source: https://news.ycombinator.com/item?id=32547760.)
Funnily a comment I posted yesterday just passed the 75 points, so it appears that either there is no cap or that it was lifted.