Geez... I go to get a sandwich in Mithril and now we get responses!
Two wolves, I'm considering promoting you to near Page status.
JD,
There is no socialist state but Vesh could be construed as such considering it's run by a semi-milita style Vigils and their fans. Like Two wolves said, they believe more in surviving than questioning what kind of government works best. At least in Ghelspad. It might be different on Asherak, but hard to say for sure.
Ghelspad has a wide variety of climates, much like any typical fantasy world. That said, Ghelspad is more "default" than other areas. Termana, for example, could be considered more of a African continent deal in some ways, a 'lost world' in places. Asherak has two societies, one devoted to the gods and thus a large society. The other more tribal and live in deserts and/or in the mountains. Mostly the Soul burn Wastes and the Desert of Onn tend to predominate life on Asherak more than the deserts in Ghelspad. The Dragon Lands are more of an archipelago type of living. Not to mention structured by dragons and kobolds.
Now for the R&R series, yes R&R I has some stuff that need work, but honestly it's good for the artifacts, some spells and of course, magic items. (Which still need work). I myself believe more in a system (using the DMG/SRD pricing) where you increase the market cost in some cases. Same is true for the scrolls, depending on level and type. (IE some arcane spells are common, some are uncommon, some are rare. (Like scrolls of wishes and limited wishes). Divine scrolls (for the "common spells") are more common and often go off with less "hitches" for those that can "access' the divine. But even so, scrolls of raise dead and war scrolls are less common. Same is true for resurrections.
CC III is nice cause I wrote one monster!

But yeah the section detailing the idea of modifying the usual "Guardinals", "Archons" and "Eladrin" to be more...unifying in some ways (IE some Archon types serve at the whim of Madriel and thus can get more healing power and thus are considered Angels) is one aspect I truly enjoy. Plus the Intercessors of Hedrada are nice too.
My only problem with CC II is there are couple mistakes when it comes to a few monsters and probably the need to revise the summoning charts to be more in line with 3.5. Otherwise, Slacerian Dragons rule!!
Iron Heroes + SL is doable. Just because they rely less on magic items doesn't mean the gods have abandoned them. Nay, calling on the might of the gods might indeed be the premise of a great Pr-class. Of course I need to tweak the rule set for that...but other wise it has potential.