Forget the Scourge. It's all nonsense

I doubt it's as "nonsensical" as you might think. After all, they even refer to it as a form of Dark Energy in the game.

I think that the Jardaan and the wonderfully named "The Opposition" are still around and they just simply left Heleus. The Protheans in ME1 we see the bodies on Ilos, in MEA the only remains of that war are the Remnant and the Scourge. We never get any other information on them compared to the loads of information in ME1. We don't know if the Scourge is the result of some deadly weapon or at least a weapon that made Heleus unlivable by the time the AI left the Milky Way. Its hard to say if the Jaradaan are the villains here, because why create vaults that can support life? Sure they could probably destroy life at the touch of a button, but still.  The only reason why I want them alive is I'd be curious what would happen once they realize (they probably already did once they saw one of their vaults was activated on Eos) that all of the vaults and including Meridian are activated; which is why MEA2 deserves to be green-lit just based on the Jardaan alone.        

In fact it's stated that Khi Tasira station( originally mistaken to be Meridian) is one that caused the Scourge to span entire Heleus system. However that was secondary "explosion" after effect, as that station and Meridian were the primary target of a weapon that fired the Scourge.


We know a lot more about the Scourge in ME:A, then we do about the Darkness in Destiny.