Imagine TSTSNBN set years after TUC with a dunyain/half-dunyain running a breeding program for the Few. The Later Great Ordeal is just 300,000 sorcerers.
If Earwa's current timeline mirrors the First Apocalypse, then I guess we see the third books set in the south as the No-God destroys everything. Esmi and whoever are left combine their forces with Zeum (who was curiously absent the first time--didn't they get the email?). Search for the Heron Spear flounders or the weapon is destroyed in an act of betrayal right before Esmi fires it.
EDIT: If the series is set after AE, I want Kelmomas to be an insane Cishaurim. Perhaps with the water, he'll finally feel like confronting his dad.