That is just a great idea. I would even go up to proposing 3 feed tabs:
1/ The current feed based on people one follows (i.e. like a set of TV channels)
2/ A curator feed as you suggest, basically that would contain trusted guilds like Curie or Steemstem and Steemians that re-steem a lot things of interest to oneself. Quality curation guilds should be funded in delegated SP by Steemit.inc.
3/ A personal favorite feed, that contains the people a user interacts a lot with and does not want to miss anything about.
All this would be on the personal dashboard: The follower would know he is followed by the user, yet without knowing in what category he or she was placed in.
In my opinion, that could allow, in time, an improvement in the quality of the content viewed and rewarded, and encourage authors which are consistent in quality. Those of the followers that really like a content creator's work would be able to make sure never to miss anything...
And all this in addition to a real search engine (note to self: bug my bro so he gets really into it ;-))
All these are great ideas, but it's actually kinda funny how obvious a subject-subscription layout of some kind - any kind - should be a thing. Much of the mainstream websites offer this, from Twitter to Linkedin, wordpress to minds.
People don't want to browse through random shit for an hour to find a couple of things of interest. People don't want to be told what they might want without any prior context. Even facebook, wechat and Windows 'learn' what you like with experience watching your every move.
I want to join Steemit, meet like-minded people and read things that I personally find intriguing... it's not that hard =/