Something more sexy than just...
https://news.ycombinator.com/rss
...would be nice.
Such a nerdy website should really publish an OPML for its top tabs.
It would be truly nerdy if they would crawl for available feeds from front page news articles and build an OPML out of that.
Flat lists of feeds works too. Imagine an OPML or a flat list of feeds including everything with more than 100 points from the last 30 days.
Noobs will probably cry about it being larger than 4 items but if it is 100 000 feeds it would truly be an awesome thing that I will worship like a god.