>>43350161If I had good ideas for the kind of setting you're looking for, I certainly wouldn't just throw them to you for your free, guiltless use.
Here's a thought: If you can't come up with good ideas for societies, commerce between them, and you can't be bothered to do your own goddamn research for that information, or for images of vehicles, weapons, or character, then you have NO GODDAMN BUSINESS DMING, and your game it doomed to fail.
Come back when you're actually willing/creative enough to handle this shit on your own, and maybe we can have a collaborative worldbuilding thread for this type of setting. Until then, go do some fucking research.