That short intro raises far more questions that it ever answers. Besides, when you actually get into things, it is completely inadequate. No, you have to re-think parts of the fluff, STOP changing it considerably every month or so, and fire the more self-proclaimed geniouses from the staff of GW and especially GW.
It doesn't have to answer all, or even most of the question it raises, it just has to explain the basics of the situation (Dystopian Empire of the future beset on all sides by even worse factions) in an interesting way to pull in audience and it does that is spades!