All throughout running a server, I asked myself whether the community was unbecoming (not just towards us, but towards each other), or whether we (and the servers before us) were just doing a terrible job at fostering a positive environment. A few years after we shut down our server, I heard a rather famous League of Legends player had started a private RO server, and a few months later, heard that he flipped out and told the community to f--- off, shutting the server down.
It's hard for many people to imagine a community more "toxic" than in League, so I had just figured, perhaps the failure wasn't our fault. Reading the comments in this AMA really makes me think though, that there was actually a solution, and we had just failed in community management.
My words of wisdom here: lots of people focus on product development, but the community is often just as, if not more important; don't neglect it.