I dunno if this is within your wheelhouse but what I'd really like to see is a manual weighting by community.
So, for example, if you're mildly interested in Linux, you can give those communities a 3/10 weight and that way you'd only see the most popular content rather than having it dominate your entire feed.
And then a gaming community 10/10 weight so you'd see every single post.
Maybe you can combine the 2 and just make the automatic "for you" weighting visible and manually adjustable.