I was thinking the same, the Clan aspect did more to divide the player base than any other factors. It was a great concept, so not necessarily the root cause, but I think the prospect of "Clan War" is what started the knowledge-hoarding around here. It felt like everyone stopped sharing tips and strategies with the Raid Bosses because of the possible advantages they might gain against opposing Clans - hell, there were a number of rivalries that arose right here on the forum.

Friendly competition aside, I really noticed a change when Discord came into the picture. It seemed like most of the Clans preferred to exchange ideas in their own private space - away from the prying eyes of potential adversaries and even the developers themselves. I can't say I blame them, given a handful of bogus incidents that occurred (not to mention the endless complaints from a few chuckleheads who never had anything positive to say) I understand the appeal. So a bunch of folks left for Discord and never came back.

Another thing to consider is that we've had a few people over the years that went above and beyond in creating detailed guides for things like Dungeons, characters and talismans - out of their enthusiasm for the game. The reality of this is that it takes a considerable amount of time (and resources) to do it well, and some of these cats just don't have the time anymore or have left the game altogether. Life happens... Maybe those days are gone, or maybe it just needs some new blood to come along and continue the tradition.