Brilliant essay, wondeeful points, and I enjoy how you've brought in all the Whedon-verse quotes (we know RTD was influenced by Whedon et al, and it stands to reason that Moffat plays in that same shared zeitgeist as well).

I had a thought -- and I'll have to go back and watch. When River dies in the Library, what happens to her body? Now that we know she is a Time Lady, is there any chance that after the Doctor leaves, she may have regenerated?

!!???