Worlds That Don't Affect Story: Recognizing a Backdrop vs. an Integral Element

Hey everyone, got a specific question here. I've been reviewing a script lately for a fantasy series we're developing, and this idea of 'worlds that don't affect story' keeps coming up in my head. I'm trying to ensure our setting isn't just a cool place but something truly integral to the plot. My current headache is that the characters could almost seamlessly be dropped into a completely different fantasy world and the core story beats wouldn't change much. I've tried suggesting some more unique magic system elements, but they feel bolted on rather than integrated.

So, what's a clear, dead giveaway in a script that the world itself is just a pretty backdrop? And more importantly, what's a practical way to fix that, by weaving a specific world rule directly into the character's motivations, conflicts, or goals? I'm looking for concrete strategies.