Originally Posted by
vondevon
The lore I've been able to find re: invasion points is that, while Azeroth is as yet Sargeras' most coveted prize, the ultimate goal of the Legion is to exterminate all life in the Great Dark. To that end, the Legion is involved in countless conquests of innumerable worlds; though being on Argus grants us the opportunity to intervene in these conflicts. When I first learned of these, I was thrilled at the concept of seeing new environments and/or new species, even if we eventually lost connection to these worlds after defeating the Legion. I understood the purpose of the Legion's presence on these worlds to be twofold: extermination of life, and consumption of that essence to fuel the Fel.
After doing several invasion points, I can't help but wondering why the Legion is even on these planets. Several of them are completely barren (frozen tundra, molten lava, etc) all of them appear to be completely lacking in sentient life. There is a forest planet, which I suppose at least has plant life, but no animals or critters to speak of. It appears that the Legion has only just begun the invasion when we arrive, so I doubt they have already stripped these planets of life.
Are these planets designated to become Legion staging grounds? Are all of the life-forms just in hiding and not near the combat area? Or do these planets harbor nascent world-souls to be used when Argus is completely drained of power?