I think this problem could be partly solved with the option to curate your own feeds. Currently I am using Connect for Lemmy, and I see 3 feeds, Subscribed, Local, and All. It would be good to be able to create a new feed and populate it with content from specific communities.
And going even further, I should be able to make my feed public, so other people can subscribe to my custom feed too.
Maybe this is already an option with some of the other Lemmy apps?