Where is the WA based? Where is their base? Their Stronghold?
I propose that the WA build a base of some kind in the far eastern blight/ or other unfriendly place. Make it an extremely impossible place to get into. With dozens of AOPs grouped together, Kwellens in bunches, and packs of Wraith Lords. That should keep any brave (suicidal) adventurers at a good distance.
We need an enemy presence in the world. Something that is always there. Someplace dark and ominus. Somewhere where nobody will go because it is certain death. Somewhere you cannot get into no matter how hard you try. Somewhere the really big guys hang out. The guys that cannot be killed by a group of 10, 20 or even 30+ lvl 100 adventurers.
My 2cp