Thats some good stuff Curethan, can't say I thought of it in that light until you mentioned it.
If TTT moves to Akka, TSTSNBN will be short. The guy is pretty old as it is, even with the qirri he's got to croke sometime soon. I kind of want him to follow the same track that Kellhus did to his father, and end up killing him through circumstances that the bearer of TTT could not predict. Maybe someone is hunting Akka right now as well, maybe its Mimara, and TTT will skip over Akka and Mimara will bear that cross after she murders him (and, thus, revealing that she is at least 1/2 dunyain, since I don't believe a mortal mine could grasp TTT fully).
But that all kind of makes TTT seem more like a living thing rather than an idea, and I'm not so sure I subscribe to that.
Hmm, what if Achamian comes to the realization that something higher is manipulating his path? Not Kellhus, a dunyain, but a God has come before him and murdered all futures except one.