As for races, obviously we'll do human. We may reskin the dwarf as a mountain breed human and the elf as a deep forest breed human - this retains the mechanical variation without disrupting the atmosphere. With a good backstory, I'd even be inclined to allow something like a "gnome" or even a "goliath" as a sort of straggler from the "dead races of long ago." Consider that Wagner's Kane was actually one of the first men - he's often described as being physically different from normal men upon close inspection. In one story, Kane even briefly teams up with a giant that he finds wandering in the desert. They lament the changing times and the rise of man together, heh. In other stories, he fights frogmen, werewolves, vampires and ghouls. .