Interesting idea!
I don't see any reason why this couldn't be implemented on top of the Steem blockchain. But it probably has to be a new website.
AFAIK Steemit.com devs are quite busy nowadays and have already a ton of new features in plans, so they might not have much time to do this anytime soon.
But if somebody could do a totally new website that shows only that kind of content what you describe here, that would be a solution.