Actually....
I'm making my own "sourcebooks" for areas of the west. Right now my group is in Darakeene (Meliad, to be precise). I made my own map of the city based off the map in the Ghelspad HC. Moved a few things, made the river a bit wider (seemed somewhat narrow to me), that sort of thing. The point is, I'm making the Scarred Lands my own, taking the wonderful goodness that is already there, and personalizing it. I'm not changing anything drastically, just tweaking to my tastes. So far so good.