For example I'd like to browse all of the gaming communities at the same time. !gaming@lemmy.world and !gaming@beehaw.org etc. Something like all or local but for custom user created groups. This wasn't really an issue on reddit, but would be useful the way lemmy works.
I would love to have this too. Big and active communities drown the less active ones and I would like to have different groups of topics to be able to not miss those less frequent posts.