RE: Steaming dogs with beef broth?
Well, my first reaction to the beef broth is that it's not a good idea. However, assuming for the moment that the dog will suck up some flavor, and following the Maid-Rite method, here's something that might be interesting, if you just wanted mild flavoring, and room for more stuff:
What if you layer your steamer with chopped onion, and maybe throw bay leaves, sprigs of rosemary, stuff like that on top of the onions? Might make a different tasting dog.
I have a chef friend from the CIA in Hyde Park. The students there learned to make hot dogs. He says boiling is the right way, because it removes excessing sodium. I trust him. Steam may do the same thing. Then, you could always add grill marks somehow if you like. The steaming is working well for my taco ground beef.