The UI's a little janky, search doesn't always produce clickable links (mostly federated subs).
Finding subs relies on lemmyverse, when it should be integrated into the sites.
Similar subs should federate together, not be siloed. More USENET, less phpbb.
Kbin has a strange division of threads and "magazines", which means clicking thru multiple places to read anything, Lemmy & Beehaw seem simpler.