i would find it interesting to be able to 'follow' topics instead of people or in a seperate 'feed' somehow

lets say this week i'm into dutch, and food then filter out all dutch food topics somehow
and have several options to create custom filters

conspiracy + bullshit
freedom + netneutrality

to get specific notifications if anything like that combination pops up.

art + painting + landscape

This way you can get deeper into the data faster to get closer to what really interests you