Boost for reddit allowed the creation of custom feeds with groups of subreddits, I suspect this is harder across lemmy instances but it would make my many communities easier to navigate if I could group them together (even better if they can be grouped independent of whether I have actually joined the community).
If this happens I’d like to see granular (per feed, community, server) scope for mute rules too.
This way I could construct a custom feed and mute specific things in it (like say an annoying poster or instance that I don’t want to interact with in that community, or a keyword) but have those things visible elsewhere on the site. That would allow me to dodge someone’s terrible takes in a politics sub but still see their opinion on a TV show elsewhere.
Clones of server feeds would be nice too, especially if I could keep a custom clone of, say, local or all and apply scoped mute rules to it. Those would basically just be rule scopes wrapped around the original feed.
That would let me clone a feed and filter out all of the shitposting communities from it - but shitposting would still be visible via the original.
All of these features would make it a lot easier to find the sort of content I might want at a particular time.