Discovery seems limited to the books the people on that instance are reading. I don't think much discovery will be happening on this site.

Plato's Republic. Hated the Dialogues, and I'm still not a fan of the Socratic method (Yes, Socrates. That is quite so. I can think of no other way Socrates), but there's just so much to it, that I'm into it.

Yes, give me buttons for /subscribed and whatever the other one is. Also, I miss the dopamine rush of that notification counter going up.

Discord. My non-technical friends are there, even the technical servers seem more populated by knowledgeable people than Matrix. Matrix has been very confusing to use, and personally, except for the servers that bridge everywhere, I found it lacked the people I actually want to talk to. I prefer even IRC to Matrix.