The Better Angels is a Clark/Bruce allegory in which the Angel of Light and the Angel of Death are on a Quest to find Pure Souls. It will also be one of the featured Story Process Writing Essays on superhero_muses this month.
Wings Of Darkness Trilogy: Book I: One Honest Man fits the dark Nolanverse perfectly as the Angel of Death must find one honest man in Gotham, or the city is doomed. A Bruce/Jim story (of sorts). ;)