This are 3 out of 9 regions, right? So there will be more possibilities.
They look all very cool, hoping the others will be just as cool or maybe even cooler
Ok I'm not quiet pleased with the advantages and disadvantages, but you already said this in a beta stage so they will change till release(maybe also pre-release).
But from this 3 options I would choose Erthee L'Bala, I like the idea of woodelves covered with snow.