I would love, to have Tags in Lemmy. I love them to find posts on the same topic ore news in Mastodon, and I would use them the same way here. For me it would also be a good solution of the “Problem” with dublicated ore unspecific Communities. So if i’m only interested in a subtopic, I can just follow the tag, and get only the content I’m interested in. (For example, if I only want posts about climate news, I can follow a community for climate news, but also the tag #climatenews (ore something) to get posts from for example Worldbews too.