@aphyr custom emoji and gifs, I can mute all the servers I don’t care about and pretend they don’t exist except when I need to be there, I like the reply feature as well as threads being different (vs slack for example), infinite scroll back as someone else mentioned, voice chat built in…
But I only like it for friend group chats with channels for different topics (usually different games). I do not like big servers or “documentation” servers. Those suck ass and it’s Too Much.