In Hindu there is a concept where deities will manifest themselves on earth influencing the world. Be it good or bad or neutral at times. This concept is call "avatars" and I have been wondering if Tarn could somehow implement it into the world gen, having gods influence the world through avatars.
So this is how I think it would work. At some point in the generation an avatar is manifested into the world. Generating an NPC with no parental links. The avatars will gain skills align with their spheres they will live a normal life until they reach year 12 of their life, at that point they will go out and influence the world bringing peace or chaos, sometimes two avatars of opposite spheres might clash with each other, like an avatar of war and chaos might clash with an avatar of Justice and fairness creating an everlasting war that will end if one dies creating a history of endless war if the avatar of war wins, or bringing peace if the avatar of justice wins, but some can be begin like an avatar of poetry will create legendary poems through out their lives. These avatars will be revered in their temples. Due to their impeccable skills ,the people will believe that these avatars are a manifestation of a deity and scholars and poets might be influence to write about their lives.
I know there is many sphere that are really misc. at times, like I am not sure what an avatar of day would do, but maybe the minor spheres may just become high priest of their own temples and gather more believers. My suggestion may have holes when it comes to more obscure spheres. I only thought of major spheres, like war, death, Justice, peace, and chaos. If does this it would get gods to influence the world to their sphere creating a very colorful history once our characters jumps into the world learning about the legendary Military tactician who is on a campaign to conquer the world, or hear stories of an avatar of courage going deep into a fallen fortress to slay a forgotten beast.