@ Callan - The cup is half full? Could be that Yatwer/Aurang sought to shut down Esmi's womb entirely and Kellhus was able to mitigate the curse. The power of a meta-gnostic dunyain?
I'm not sold on those 'nameless ones' all being dead. I bet Kellhus could find a use for them at Dagliash. Could be some Anasurimbor monstrosities roll out, possible with the gift of the few and the metagnosis, the Celmomian Prophecy fulfilled in a most unlikely way.

Also, there's way more of them than we suspect. Kellhus has been busy. Maybe he's impregnated all of Eanna during weekend stays.
@ EkyannusIII - Your Dune analogy got me thinking--it's less likely that someone is messing with Esmi and all of the surrogates than someone simply messing with Kellhus. Either something planted long ago or an ongoing sabotage. Markless sorcery? Could be gods and/or dad. If Esmi's problems stem from her possession in TTT, then Kellhus might be feeling some residual effects from TWP, if what happened on the tree in Caraskand was a possession.
@ Madness - WOW! Your thing about Aurang->Esmi->Kayutas really ties in with what you were saying elsewhere about Kellhus being offed by a son and Moeghus, dagger and chorae.