Try this one...
The past changed, and the PCs were somehow left behind. Multiple factions are at war, the present dominant faction (
The True and Secret Kings) rules through corporate states. They have a form of fascism that uses the structures of corporations in place of the state. The state is also the Capitalist and owns the church as well.
The reason the rulers spend so much energy on control is that they know that other factions could bring back the old reality. A vast democratic society that sprawled across most of the Galaxy and allowed the citizens the freedom to shape their lives to their own dreams. But in a world of Freedom and Fairness with society organized as networks of equals had no place for secret kings.
Still, the far smaller more controllable human society the Kings rule has vastly fewer people, tens of billions rather than uncounted trillions, and a lower level of technology (TL10^ rather than TL12^). This means the weight of all those souls cut off from their lives and reality weakens the new reality of the True and Secret Kings. Thus the Kings must rule with an iron fist and secretly. They must also limit human potential. Only the True Kings and their loyal servants may use the true art. Even the idea of Magic must be forbidden! Poverty among the masses, strict censorship, rules and control for their own sake, a cold, prudish, rigid puritanism, all help to limit the people and their souls.
This is a Secret Magic Campaign set in a dystopian future dominated by interstellar corporations. Think of it as
Mage: The Ascenion meets
The Sun Makers. With a generous side of
Madness Dossier. Start the PCs as desperate outcastes or malcontents in the dystopian interstellar state, then let them know they were wizards and star wandering heroes. And that's what they are being hunted for.