I'd love to have more of the story fleshed out. I mean it'd have to take several years between us leaving after the events of WoD to going back now for the Naaru to "corrupt" and impose it's plan to wipe out the nonconformists, or whichever.
After void elves, now the alliance are allowing these fanatic draeneis? 3rd draenei faction? really getting tired of those hypocrites playing good guy card. Anduin, the so called beacon of the light was pleased to see the void elves. Now he's gonna enjoy seeing Xera's offsprings? And you are telling me no one is manipulating him? if not then he's nothing but shame of his father.
The problem with this story isn't the idea of light-based zealots. It's that Yrel is leading them, and the ending of WoD (as crap as that expansion was) is completely being undone. Off-screen. I'd even be willing to overlook that second point, if they didn't pull Yrel into this pile of crap.Yrel... She is the only good thing that survived that expansion for Alliance. So she gets thrown under the bus for the sake of a Horde questline (a faction which saw her a grand total of twice in the entire expansion), radically changing her personality without any apparent reason to do so. It's a complete betrayal of what few good things came of that expansion.
So finally, the alliance showed their true selves. So weak to accept how evil they are. I am actually enjoying these kids' crying. Get over with it. These draeneis led by Yrel are pure evil, and the alliance are accepting them, which makes them evil too. Learn to admit and digest water drops (worse version of snowflakes)
Actually, I'm pretty sure Yrel and her Lightbound aren't hopping over to our universe with the Mag'har, at least not yet. They probably will at some point, but not as of now.