That doesn't work well for a game where people come from different worlds, tho. In fact, 4E idea of one world in the center of the multiverse is (
in my opinion, which is not better or worst than everybody else) is as bad as the sun turning around earth... I don't want a snowflake special world... I'm with Galileo here, out with geocentrism...
And I didn't find GW so intrusive. All 4E fluff goes around primals vs gods. I was tired of seeing references of it everywhere on monster manual. It was worst than Blood War for a mile and half. Or then when race X was from World and mutated on Shadow or Fey... Geocentrism again...
If 5E insists on this, it will fail to appeal to a lot of gamers... which it's not what's planned.
Thus 5E cosmology should be modular or as neutral as possible.