I'm thinking of running a campaign set in an oppressive mageocracy that ruthlessly cracks down on any non sanctioned magic use. The PCs would all be rebels fighting against the regime from within. This game would be primarily in an urban setting and would focus on roleplay and combat about equally. Because access to magic has been so restricted, the PCs will all be non-magical classes with extremely limited magic items.
As this will be a deviation from the assumed high magic nature of Pathfinder, I'm wondering if anyone has any advice about how to better set up and scale encounters against magic using enemies.