I don't see the expansion as game changing' I just see it as a continuation of what Trion has been doing for 18 months now.
As far as expansions go it doesn't seem revolutionary at all, new zones, new questing styles, new dungeons, new souls, etc, etc isn't anything remarkable. The remarkable part is the pace and the high base upon which this expansion is being developed. What really boggles the mind is that the pace of content delivery on LIVE far surpasses any other game, regardless of genre, whilst simultaneously producing this enormous expansion. That is what is revolutionary.