TheMade

I think some of this is pretty spot on! I’ve long thought Kal will die in book 5. His death needs to have lasting impact though. So something like reforging the Oathpact or making a new Oathpact, seems impactful. How about: as a result of Dalinar losing the contest of champions Stormfather had to sacrifice himself so Kal becoming another version of a Stormfather? Perhaps Kal willingly becoming another Herald and choosing imprisonment on Braize? These all fit semi well into your theory here!

Been doing an entire SA re-read and Kingdom of Whispered Truth seems right to me. Fits in the abbreviation world and seems like a book Szeth would maybe write to show how his people know the truth but subdue it with whispers and exploring the whole Truthless schema