Crossposts might be annoying, because
- essentially they are the “repost” feature of lemmy. And repeats might be low quality spam, because you have to look at the source, how often it was reposted already, etc.
- crossposts might seem like a cry for unwarranted attention, but they might be necessary in a fractured federated system like Lemmy …
Or do you not care when realizing “this is a crosspost”?
Having a way for communities to form groups, and having clients handle those groups as a unit would be great. It would keep the best aspects of federation, make community discovery easier and minimise the duplication of posts.