People chew through content and expect more almost immediately these days. Even 1.5 month patch cycle for FFXIV gets people up in arms. I remember back in WoW, waiting years for any kind of updates, it was brutal... Battlegrounds weren't THAT good. If I'm out of things to do, my attention span won't hold for half a year anymore. Too many options, too many distractions. The things holding me to the game currently are paper thin anyway, so it would only take a light breeze to make me unsub, but I'm still going to enjoy the launch. I hope the next attempt at this kind of thing (assuming we get any) will have a bit more modern take on the genre, chat bubbles, combat text, quest dialogue boxes, no weird additions like MUD action commands, not TOO low poly, enjoyable combat, etc. I think things like death mattering, player roles mattering, the world feeling dangerous, night being dark, dungeons being dark, etc, are all great, but adding the extra jank is where they messed up. They didn't take enough from classic WoW imo. In many ways it was a vastly superior game to EQ. One thing MnM has that other mmorpgs don't is the feeling of being useful. You can find a corpse, you can port people when travel takes hours, you can rez someone and save them hours of grinding, you can buff a newbie and they'll go from painfully slow leveling to sanic speed, etc. In a game like FFXIV, your class literally does not matter. You just press your buttons a bit differently. World is not dangerous, it's a joke. I couldn't even tell you how most of the dungeons connect to the overworld anymore since you port to everything immediately. I think MnM nailed that aspect and at least a few others, but completely dropped the ball at the same time.
Ultimately, there are just too many different moving parts going into an MMORPG and I'll never get the game I'm imagining in my head, so I'll just enjoy the launch and then move on when I get tired of it then wait for the next one.
