Didn't think about it before, but saw this thread: https://lemmy.world/post/26747873

Lemmy tends to have duplicate communities between different instances for many subjects, and this can make it hard to find information here. For instance, if i want to know if anyone has made a constructed language for birds, i have to go to the communities list and search for “conlang” and “constructed language”, open every relevant community i find, and search each of those.

The Lemmy search feature quite good, but having all the knowledge about one topic on one community makes it even better

There is a GitHub issue, but no planned deadline: https://github.com/LemmyNet/lemmy/issues/818