I'm glad you mentioned the bit about retelling Gilgamesh because I just couldn't decide myself, when I read the book. The names were such a give-away, and the threesome, but the plot of their relations was so different, I wasn't sure. And I was unclear about why Gilgamesh's story: just the starting over of the world? Did you have thoughts on that, too?
Thanks for mentioning Gilgamesh