Oh that's cool that you'd been thinking along those lines too. I've read a fic where the boys had become hunter gods but never anything where they were God...
I had originally had two separate ideas - one was a vague thought about what would happen if it turned out that Crowley was God, and the other was about the Trinity where I was thinking of John as the Father. When I came to write this one the two things merged.

Anyhow, enough rambling! Thanks for reading and I'm glad you liked it!