Ok we will move to Argus for patch 7.3 in order to fight at the base of The Legion. But considering Argus is a plain, almost dead, corrupted terrain, how does blizz expect a druid or shaman to function there? A resto druid uses the power of "Nature", if Elune is not going with druids, there will be no power source for them to use. We don't know who or what Elune is but it is clear that she has to watch over Azeroth. She can not leave Azeroth alone for the journey of mortals. Also shammies need elemental spirits and nature to use their abilities. We saw how trall fucked up in wod when he was not familiar with the elements of that universe. In Argus there wont be any elemental spirits for help. Even there is they will be fel corrupted.
I dont believe elemental lords will go to Argus to help shammies cause they are bound to Azeroth, they dont care what happens on other galaxies as long as Azeroth and their elemental plains are stable. If there was such an option they would already help during TBC and WOD events.
Light and arcane are all around the universe so u can use them wherever u want but nature and elemental based classes do not match that "lets go to argus" scenario.
Just my opinion, what u guys think?