I don't want it
automated, I want the tool to help. I don't need it to pick feeds and follow them, but being able to lists what other feeds are splitting off of feeds I already follow, or find the feeds being reposted to me, ... would be helpful. This can be built on OPML, this can be built on RSS, but your notion that we already have everything we need does not resonate with me.
You don't have to get all defensive about RSS, I think it's fantastic technology, but it is missing a few key components to be a replacement for social media in a meaningful sense. I know you know this, because you are here on a social media site right now instead of reading OP's feed. Whereas I don't want to ever leave my reader and instead consume news and recommendations and comments from my friends (of friends) right from there, instead of using gameable/botable centralized platforms with topics and moderators I don't control or trust.
My vision is not clear I know, I hope I can find time to prototype (or at least spec out) what I mean some time soon.