We need Google's "Priority Inbox" for RSS feeds. The signal to noise ratio in my newsfeed "inbox" is way out of whack.
Posts user A has read and liked would trickle though the social graph out to other users who have delegated to user A in on the related topics (or delegated to someone who delegated to A, etc). Sort of distributing the job previously done by a newspaper's editors out to the people I know and already trust in those sections/topics.
What didn't you like about it?