It may be the sleepiness talking, but I’m suddenly feeling the urge to run a Dark Sun campaign in which the PCs are templars and other servants of one of the Sorcerer Kings, tasked with keeping the peace and investigating crimes in their home city-state.
And for whom failure to close a case is potentially punishable by death, either in the arena or as sacrifice.
I shall put it in the stack with the other 24,917 campaigns I want to run "at some point."