Thanks for the feedback! I think if your main goal is to just search for communities by name, then it’s best to use: https://browse.feddit.de/.
I find lemmy.directory the most helpful in browsing all posts across the lemmyverse in a single feed (via the “All” filter).
Searching for new communities may be able to be made more universal, but automatically pulling in those feeds (subscribing) is probably not a good general idea. See here for more info on that: https://lemmy.ml/comment/476925