In nearly all of Sanderson's cosmere books religion has always been in the center. This seems to be the most prevalent in the fifth Mistborn book, Shadows of Self. I was thinking about the different religions and the formation of them, and was also thinking about how the koloss have evolved. We have seen them mostly in the Alloy of Law era in the Broadsheet throughout the Allomancer Jak's story where they can still create weapons, can talk, and create huts and outside fire. The most interesting thing we have learned is from Sanderson himself talking about how they have become a true breeding race and the Koloss-blooded are the children of regular Koloss. I feel like the time the Koloss are at intellectually and all other books point at the importance of religion that we will see the them develop a primitive religion that will evolve over time and become more complicated through the other books. I would honestly love to see a religion grow between them and because their own society is changing at a slower pace we could watch this religion develop in ways unlike the other four in the books. Last thought wouldn't it be awesome to see all different tribes of Koloss each develop their own religion each unique to the tribes.