Yeah I’m pretty interested in this and Topics is only the first iteration of the idea. At the time piefed.social was basically a single-user instance so making the topics admin-manually-curated groupings was fine. Perhaps it’s time to take things to the next level, tho.
The concept of ‘multireddits’ sounds like a bundle of related functionality and I’m not sure which parts of that you’re interested in that PieFed’s “topics” doesn’t already do. Is it the user-created part? The subscribing part? The join-many-communties-at-once part? PieFed does some of those already but you won’t see it unless you’re logged in…
Yeah user-created topics would be a fine enhancement. Various aspects of the multireddit concept have separate issues in the issue queue but they haven’t been coherently tied together yet. It might be time to do that.
One way to limit exposure to negative news is a keyword filter, which I implemented 6 months ago, early on in the project: https://piefed.social/post/7576