I want the finale of my Campaign to be at concainid and before that a trip through the alenic depths. My theory is that Concanid is a giant Yu'Vath construct that is slowly awakening the other constructs throughout the koronus expanse. I am having a bit of trouble working out the details though. I know the Alenic Depths are where the Rak'Gol are supposed to be from but anyone have any ideas what else might be in there. Apparently Wrath Umbolt went there and it is described as a place where souls are stolen.

Have you read the "Whispers on the Storm" adventure in the GM kit? Without giving too much away, there are people in that who are no longer individuals but puppets of another. Effectively, they may as well have had their souls stolen.

yes I have that one and I am using it in the campaign later