cbwjm
Seb-wejem
More like Howard means getting rid of anything that isn't human as a playable race (though this is due to Hyboria being an earlier time of our own earth). Otherwise, I'd remove any races with overt magic and reduce the playable races to human, dwarf, halfling, elf and leave the monstrous races as either the inheritors of fallen empires or as beastmen representing the savage wilderness threatening the borders of civilisation. Entering a ruined city and fighting off hordes of yuanti and their abomination of a god would fit a S&S game perfectly.