I think it would be cool to have the module locations marked in the Golarion map, like what was done with greyhawk.
MapLink
I agree, especially one on the web that is kept up to date with current and future modules/Pathfinder locations indicated.
I can see this as being a good tool for DMs to use to plan adventures. My thought would be "hrm, the players are here now and want to head down there... I see that W87 is coming out in two months for a location along the line of travel, maybe I'll pick that one up!"
That would be awesome. I know the coolest thing about first seeing the old World of Greyhawk map 25 years ago was seeing the locations of TSR's published modules and where everything was in relation to each other.
And it would be very useful, as I'd be doing this myself if it wasn't already done for me.