Interesting idea, but the fact so many of the feeds are broken probably indicates how difficult this is to maintain. Ideally something that needs to be done via algos and machine learning rather than custom parsing for each site (not unlike what search engines already do internally).
RSS saved me the "right click on a bookmark folder -> open all" every hour or so. Does RSS increase my productivity or decrease it? On one hand, I'm not obsessively checking a bunch of websites. On the other hand, I have a firehose of content directed at my face with hundreds of feeds.
Next step is local analytics to sort articles based on local-only rules/analytics/goals.