What do you do with those ideas that are too much based on another thing to be an original novel but way too off-base to even be an AU?

Tags: like specifically i am thinking about my dream rewrite of the show lucifer where lucifer is actually inhuman and kind of shattered and chloe is the first saint in 21st century los angeles (chloe is the patron saint of justice and women on the police force and actresses taken advantage of) (obviously) but also just in general