The idea that something could cause the Zhodani to avoid an area that large and have no visible state boundary of its own is fascinating, and spawned the extensive history write-up in those articles. That it also leaves the area of the Blight as a veritable hot zone full of mutually distrustful worlds, pragmatically neutral merchants, and Zhodani agents under every rock drove the writing more than practicality. Recognizing that politics, psionics, and conflicting racial psychologies make for some fairly stupid moves (like the Merchant's War) only made it all easier to justify. The area is civilized but not civil, and the Zhodani only make it *worse*.
Fertile adventuring ground? You betcha.