[Spoilers C3E100] The gods' job

Brennan made a point in episode 99 to highlight the fact that Aeorians wanted to kill the gods without taking over their domains, which would make it a very different thing than what the Matron did.

So... what will happen to the word without the different domain stewards?

Imogen has been asking herself that question, specifically thinking of the Matron's domain.

"Doesn't the Matron guide souls after they die? What happens to people that die if the gods aren't around? Is it possible to die?" (C3E44)

"If the gods aren't there, if the Matron of Ravens isn't there, what happens when we die?" (C3E52)

What happens if The Arch Heart dies? There's no more beauty in the world? What happens with civilisation and nature if The Wildmother and The Lawbearer die? What about the betrayers, what happens with the domain of treachery, or lies if they are not there anymore?

When Vordo and Etherdok were consumed by Predathos, someone else took their domains (Fate and Winter), they didn't just leave them be.

How important is to the world that the different domains have a steward?