DM:
BTW I would like to ask how much are you tied into overall canon.
It's your world, Boss, I'm just living in it. :)
Other than knowing the basics of the setting (Iuz is bad, Circle of Eight is good, the Scarlet Brotherhood is up to no good in the south, Greyhawk has a huge dungeon, and the human migrations after the Suel-Bakluish wars, etc), I'm not very versed in the meta-plot ... I'm not even sure I would notice if you swapped something.