I'm reading "Wyrdness" by
Svartesol right now. It's a great book, but I just want to highlight one thing: She proposes (as have many others) that the Aesir came later to the North than did the Vanir (whom themselves probably came after the Jotnar). She refers to the retrofitting of certain myths to fit with an Aesir-centered world view as "The Odin and Thor Show." I laughed at that, because that's the kind of thing that geeks find funny.
Ha!