And?
I don't see how this ability doesn't define the Dark Ranger just because it doesn't operate exactly as it does in HOTS.
It's still an iconic Dark Ranger ability that carries all the themes that a Dark Ranger embodies.
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1- A character does not have to *be* a Banshee in order to use the powers of Banshees. When Sylvanas uses Haunting Wave, she is not sending waves of *herself* at the enemy. She is commanding other spirits.
2- The male counterpart to the Banshee is a Spectre.
https://wowpedia.fandom.com/wiki/Spectre
3- Banshee Form is just a form, just like a Demon Hunter's Demon Form is just a form. Demon Hunters aren't literally demons.
4- Death Knights and Demon Hunters warp your race. Why is Dark Ranger an exception to you?
How is it disregarding lore if Sylvanas was the first Dark Ranger we ever knew about, and she was already defined as being more than simply a Hunter? How is it disregarding lore if I'm talking about new player classes being given unique traits and history compared to existing NPCs of the same class?
Again, there is zero evidence in WoW where Blizzard actually makes mentions that Dark Rangers are just Hunters. I don't see how you regard this as headcanon, when you can't even point out one instance where this is actually mentioned or regarded in the canon.