Your third scenario is consistent with Philipp Mainlander's depressing theology of God's creation by an act of suicide. God would be the starting point of creation, but the act of creation would be one of God's self-destruction, and we'd be living in God's decaying carcass. This is possibly the most depressing of all ideas, given its implications, but I think it carries the logic of monotheism to its conclusion.
Then again, as Roger Penrose says, the universe may reunite when everything has decayed, and generate another big bang. So God might be resurrected, spend an eternity in a form of near-perfect symmetry, only to decay again and produce another natural order.
The pyramid shape is indeed a curious one in the sociopolitical context. I've written a lot about the dominance hierarchy as a social default. And indeed, this social structure has theocratic undertones.
http://rantswithintheundeadgod.blogspot.ca/2014/05/domestication-and-modern-personhood.html
