I'd actually prefer if the end result was a mix of both zones. I honestly would rather see a revamped Netherstorm than Faralhon which essentially was folded into Gorgrond (Faralhon pretty much is the jungle/Botani parts of Gorgrond). And it would be nice if AU X'era was trying to force A'dal to join her because then we could see civil war in the Light and actually make it nuanced with part of the Light staying benevolent.
And yes please more Arakkoa, Spires of Arak had such high quality world building.