Obviously, this answer will be retconned eventually (*waves to Carver*) but I'm pretty sure that the human souls are still up there doing their thing. During the heaven episode, you didn't really see the angels unless it was someone like Zachariah coming out to fuck with the Winchesters. It seems like the human souls are stuck in their little boxes and are a separate entity from where the angels were.
As for who creates the heaven...well, Metatron is the storyteller, right?
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Date: 2013-12-05 03:24 pm (UTC)As for who creates the heaven...well, Metatron is the storyteller, right?
But really though, lolcanon