WAR is now in phase three
So I tend to think of the way people deal with a new MMO release in the same way I think about culture shock - it runs in phases. Phase one happens before the game is released. Phase two would be your initial release run (or in the case of culture shock, the first two months of living in the new culture), and phase three is the hate phase. Those who survive the hate phase will mellow over time, the rest will quit/go home. We appear to be in phase three for Warhammer Online, as a number of bloggers have now decided it isn't fun anymore. To be fair, there's also the levelling question, although to my understanding this shouldn't be a concern in a PvP game. The theory there is that if you build stuff for levels 1-20, once people hit level 21 you either need to churn out more content, or they'll get bored.
Of course, some people blame the players. I respect this position, but it's not really realistic - people game to have fun, and either they are or they aren't. There is no try, as Yoda would say. It may be the game was marketed poorly, or it may be that gamers as a class suck, and this sort of game could never work. I doubt that, but I'll throw it out there.
It's a shame these games take so darned long to build, and cost so much. Now we'll have to wait another year or so for the next big thing. And then we'll do the whole cycle again.