Together with emotes they're really great for larger communities since they also allow sorting by flair.
For us over at /r/thegoldengator allows posters to pick one for each streamer or focus, if the post is
- artwork
- video
- photo
- clip
- highlighting a specific character
For smaller communities though they're probably redundant.
Just learned that kbin magazines federate pretty well on Lemmy just by adding an @kbin.social at the end.
Example URL: https://beehaw.org/c/thegoldengator@kbin.social
That is only one way though. KBin to Lemmy doesn't retain the /c/ community name as /m/ currently. Instead posts end up in /m/random/. This will probably be fixed in the future.