This does sound like a cool sub plot, but the OP I believe says that the city we are in is like a haven from the wars raging around the world. We could try playing through one of the areas with war and create other characters for that. Also there are units in the city called Reapers that specialize in taking out Deviants with extreme prejudice.
 
I will message Kaithas and see if she is okay with your idea Wizard.