The way I see this forming is sort of a community-run "suggestions to follow" - so a list of popular, generic topics (news, politics, economics, technology, arts and culture etc) and under each category a few users and possibly a domain or two suggested by the users of hubski as a good place to start. Basically, a "if you are interested in x, try following a, b, or c as they regularly post that content". I guess when I phrase it like that it sounds a lot like the tag system already, though.
I'm not fulling seeing what you're suggesting. I'm sure this is a failing on my part and not yours though. What problem are you solving and what is the solution? I want to understand.
This sounds similar to the suggestions system on Twitter, is that what you're going for?
Sort of, yeah, but not necessarily generated by an algorithm, instead voted/chosen by the community.