I still think that it has more to do with being open to Akka upon his arrival then it does in actually resurrecting the No-God. It certainly seems that the Dream Akka has, of the line of prisoners dragged into the Golden Room is largely the key to the No-God's literal resurrection. This dream actually preceded The Scald (we see peices of it in WLW), so the Scalded (if that is who they are) were actually Fated well before The Great Ordeal ever even approached Dagliash.
The thing is Proyas being disillusioned in and of itself certainly seems like a meaningless act. I think the time where we consider parts of The Thousand-fold Thought as in any way independent has been shored away by TGO though. Proyas needs to be disillusioned by Kellhus so he can accept Akka. He needs to accept Akka when he comes, because Mimara needs to be in a place to do/look at/see what she needs to. That wouldn't happen if Proyas was still a Zaudunyani. Kellhus can't be there to accept Akka, because the time when Mimara can look upon him isn't until later, he isn't "holy" just yet. So, someone else needs to be in charge of the Great Ordeal. It couldn't be Saubon and that's why he is dead.
It's all interconnected, nothing stands alone, it is all about how it interweaves with the next step. It's just like the Survivor keeps saying, cuts and cuts and cuts. Everything happened, everything is happening, because that's how it needs to happen.
