I still not understand why he won't five himself more power. He has Lucifer and could give himself the power of Dr manhatten. You make more problems than it's actually is.
the Destiny game series would be incredible to bring into this fic as the powers of the darkness and light would be invaluable, but still not balance breaking, even the weapons would be a great addition for normal humans.
Is this the Seventh or Eighth Iteration? Cuz as far as i understand and comprehend of this story of yours, and the Secret Wars plot happening, its the Seventh Iteration, right?