I may be getting too far along here, seeing is you are working on the first world. :P
Paizo has always done a terrific job of making adventures and material for traditional D&D settings and their own stuff in my book.
One thing I have yet to see is an actual lower magic world. Almost all of the settings fall somewhere between mid to high...pushing towards high. I would love to see an actual setting that borderlines the other direction, pushing towards mid to low instead.
Now the system isn't specifically designed for this I know, but most of the homebrewed material I see tends to push this direction to fill the niche that has never really been filled.
Is there a possibility in the distant future (after you get the new game set) that you would possibly build something that is on the lower end of the scale (not where magic is absent but where it's more rare)?
Is anybody at Paizo mildly interested by such an undertaking, or is their no market for it?