No, not for an RPG: there are plenty of those.
I was considering, possibly as a section on "Robert E. Howard for Newbies," to have a small list crunching the numbers of certain elements, tropes and archetypes in the Conan stories.
For example, how many times does the phrase "mighty thews" appear in the Conan stories? The answer may surprise you. How many times does Conan utter some variation of "Crom"? How many of the stories end with Conan riding into the sunset with the treasure under his arm? How often does Conan defeat the villain of the tale? Does Conan really face more dark-skinned foes than white, or is that just a big fat lie with absolutely no basis in the stories whatsoever? How many stories feature another protagonist, and of those, how many are arguably the main character, above Conan himself? How many times does Conan encounter a giant snake, or ape, or Cthulhoid horror, and how often does he kill them? How many damsels does Conan rescue? What's Conan's favourite type of sword, clothing, armour, drink, and food? How many of them does Conan actually have a relationship with in the stories? What percentage are blond, or lily-white, or buxom?
Everyone throw suggestions for "Conan Facts": be it little things you'd like to know yourself, or something you think more people should remember.