As for MMOs in general one of the major problems is "choice". There aren't a lot. There are not a lot of types of video-games really. One of my favorite games of all time was Braid, but I am aware that I won't see that again, and so like many of my fellow humanoids I sit down, sigh, and prepare to engage in something else. The way I see it is that instead of likening games to heroin addicts I liken them to bored children; while it may not be the most fun thing to do playing Jacob's Ladder is better than sitting in a corner doing nothing wide awake.
Yeah Braid was good. Blow is making some other sorta game now, we'll see if it's any good, coming later this year. I got The Bridge and thought it would be like Braid, and it is, a lot, but yet it's not... There is something missing in it.