aggregators solve a different variety problem vs RSS -- RSS gives you access to random sources that you curate yourself, whereas HN or link-heavy blogs give you access to a meaningful amount of high-impact articles from high-diversity sources (i.e. more different websites than you subscribe to in feedly) that everyone else is reading
at minimum, I need a tool that lets me tame the RSS firehose with some kind of ranking or priority queue, plus mix in some aggregator reading so I don't miss things