A living world as in Communities, social dynamics, PvE and PVP dictating a large part of the economy, actions having consequences whether it be good or bad. When I played UO I didn't need a story to be told to me I was apart of the story. The community told the story and UO was the canvas on which we painted.I must have missed that living world MMO in my last two decades of playing these things. The only two worlds that came close were AC2 and SWG, both RIP. The rest of the crop were static respawn fests. Even DAOC which had the best PVP really lacked real objectives and real change.
EQ was most fucking certainly not a living world. Great design and ahead of its time, but nothing ever changed on it. EQ's faction system, classes, and races as well as important items are what made it what it was. It was not living in any sense.
I'm still waiting for technology to catch up and enable what we want. The problem is EQ Next is finally pushing the technology changes we want, but doing it in a Little Big Planet way instead of a Dark Souls one that I personally want.
I'm not saying we go back to the old days of grind fest, everything is a pain in the dick.. I'm talking about devs focusing on bringing players together. Instead we constantly trade safety/convenience/everyone gets everything for community/reward/social dynamic. MMO's have become watered down versions of other genre's mean while other genre's are taking all the good shit from MMO's. Devs need to focus on what makes MMO's great.