This setting is designed to drive conflict
Assertion: All good stories have a struggle within them
My setting is designed to set up drivers for struggle, and all mechanisms introduced to the setting should consider how they interact with struggle and conflict.
This is most obvious in Region Lifecycle, where life can't exist without exploiting the land, and in the process of being exploited, the land wears out and dies, forcing life to move on. There are mechanisms that enable mortals to create new land ad infinitum, but there will always be a forced migration at one point or another. This forcing function butterflies out into territorial disputes over access to the resources to create new land; a territorially-homed entity (whether it's a kingdom or a culture) faces an existential threat if it's cut off from access to new territory, and through the normal jostling of politics there will always be competition over this access.
It's also true in the Pantheon; The Gods depend on mortals' worship to sustain their lives and enable their power. Because mortals often worship ideas, gods position themselves, through mantles, to receive the energy of that worship. Because there are often variations and differing philosophies through ideas, the gods jockey for control over that energy by swaying mortals' opinions and views around those ideas, whether through intellectual propaganda or mortal war. Gods also form alliances and regulating structure amongst each other in the form of houses and peerage, which readily sets the story both for larger conflicts between houses, and smaller conflicts of power between individual gods jockeying for power and prestige within that framework. There's also a steady stream of potential new challengers in the form of Embers and Soul Sparks, so there's always pressure from below to keep the structure and status of the existing gods from growing static for too long.
Finally, we have a balancing entity, the Eldest; the Eldest are a race of gods distinct from all others which operate as a kind of overseer in the setting, seeking to ensure the grand experiment doesn't become stale through either life-obliterating cataclysm or nor stable through permanent peace; the Eldest are using the world as an engine of invention while they try to find the answer to The Question, and will manipulate and rebalance the experiment to ensure the engine generates as many observations at the same time for as long as it possibly can. This is a deliberately meta mechanism, since it creates an in-universe actor to prevent any kind of final ending event that could stem from a storyteller writing themselves into a corner; a literal and acknowledged deus ex machina that can be understood and interacted with in-universe.
That's not to say the Eldest are infallible; having become so absorbed in their routine of balancing the world and ensuring the continuation of struggle, they've forgotten The Question they've long sought to answer: "How do people show innate capacity for goodness, despite living in a crapsack world, and how do seemingly rational, pragmatic decisions tend to perpetuate such misery?"
(Image by midjourney)