>>96822055
In Warhammer fantasy, one might postulate about something as mundane as how gunpowder and firearms peter out towards the periphery of The Old World, because the main centres of firearms manufacture for public trade is in Nuln.
You could concoct an entire campaign around intercepting an Orcish raiding party that's been intercepting blackpowder shipments from Nuln, to The Border Princes, and is rolling around on boarback blasting everything with pistols (I am more of a narrative campaign/scenario/creative modeller type player, as you might be able to tell).
Then you could take that campaign across into Tilea, and the "balkan" region adjacent to the Badlands; and there's so much you can do with this, because we have fleshed out geography coming from both intentional lore building, and the implicit background outline offered by parallels to earth geography and timelines; so if you have to wing it, it will probably be vaguely in the right direction.
Floaty woo-woo setting is what I would describe AOS as - the "realms" are borderline infinite, and frequently changing, there's no geographical parallels like WHFB had - literally an entire world, potentially, though frequently such promise went unfulfilled.
In a sense, AOS feels to me vaguer, but also narrower, due to it's lack of anchoring in a parallel earth, with all the unstated stuff that entails.
And I insist that Stormcast are fantasy space marines, that can also be girls, and are conditionally semi-immortal, which is gay.