Joystiq: I think there are generally three types of gamer: casual, core, and hardcore. Feel free to correct my terminology in the comments section or in an email, but let the discussion that ensues be proof that the shift is real. It seems as if the great mass of MMO fans -- not shooter fans or MOBA fans or fans of mobile, single-player games but fans of MMOs -- has split itself in the middle and pushed to both sides. The fandom has become more extreme, moving to hardcore or to casually hardcore.
The core gamer is a thing of the past.