Night Warrior Lore

Here are a few answers to these questions we have gotten:

Terran Gregory at https://www.youtube.com/watch?v=aEHc8le_Qpk&t=58m8s :

    It’s very much Sentinel and Warden inspired. Right? And Wardens are, as we know, the keepers of vengeance. And while they were crated very specifically they’re still, you know, at their core a Night Elf institution. The concept of wielding vengeance as a weapon. And I felt that actually factored into this. This was just my feeling in putting this story together. If they are capable of being empowered by vengeance, then that means they’re more powerful after they lost Teldrassil than they were during the fight of Teldrassil.

Terran Gregory and Steve Danuser https://www.youtube.com/watch?v=BhpGvgXyi-U&t=38m40s :

    And we thought, well, you know, that's a great moment. We have this transformation of Tyrande, that energy that she's calling upon, this dark side of Elune, how that infuses the other Night Elves in the warfront, hey, why not give that, as an option, to players. Allow them to tap into that power as well.
    Terran Gregory: Character customization, yes.
    Steve Danuser: Character customization.
    Terran Gregory: And a lot of people were interested online in how exactly the players came to have the black eyes.
    Steve Danuser: It is.
    Terran Gregory: The darkened eyes.
    Steve Danuser: Yes, the darkened eyes. And I think that speaks to the power of that ritual. This ancient ritual that Tyrande taps into - again, sorry, spoilers, but - Tyrande taps into that ritual, that calling upon- it's not even calling upon, she's demanding, she's like, "Give me this power. You turned your back on us, as those 'so-and-so's' took our home from us. Now you owe us. Give me this power." And that so infused her that it could change those Elves. So we wanted to give players that opportunity, to say, "You know what, I'm part of that, too. I stand with Tyrande," and show that off in their characters.
    Terran Gregory: And if you'll notice at the warfront, all the NPCs that are Night Elves actually have the darkened eyes. So there's definitely a sense that, in proximity, fighting on behalf of the darkened element of Elune under the darkened moon, that's what happens. And whether or not the player has customized themselves, that of course is player choice, but I think in the story sense that any Night Elf that's fighting on behalf of Elune in that confrontation their eyes would be darkening.

I made this following complaint on the Tides of Vengeance PTR Forums (and the Story Forums, too):

Blizzard’s solution?

They simply changed the scenario stage description to:

    Stage 11: The Queen's Pawn
    Confront Nathanos
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