I'm a fairly new users, but I feel that navigating around the fediverse is a bit cumbersome, maybe the wrong word for it. But there is a lack of overview in a way. I enjoy being on this server, but I also like to follow other communities. Lots of different topics, everything from cars to Linux to architecture.
Right now there are 10 (that I could find on browse.feddit.de) instances named Linux on different server. So the small number of Linux users using some fediverse instance is spread around over many servers. Coming from reddit, things were far from perfect over there, but there is only r/Linux. It's a shame users are spread so thin all over the place.
I used Linux as an example, I've seen the same "problem" for other topics as well. Anyways, just my perspective as a new users. Hope this wasn't too much of a rant, maybe we can look at this as an issue where the fediverse can improve.