I think shouts and taunts play into their personality no? If so then yep they should work on it as they have been, so far it looks good on their end after today's stream but thats the tip of the webway
While it sounds nice, we have to understand that Eldar VO is already done for EC, so they can't change much.
Allow me to paint it in terms you can understand then. You're food. Your entire species is food. You act so superior, so enlightened, when mankind at it's peak made your species seem like childsplay by comparison. But because you were individually stronger in flesh, bone, and mind you maintained some semblance of your old empire and lord it over the shadows and dregs of mankinds new. You cry mon-keigh, twirl your trinkets and toys at us, and sneer in the shadow of your corpse worlds at the foolish bumbling of humans who know no better. You can get away with that when fighting humans who do not feel it, who have no third eye to see what you really are. You call us Mon-Keigh, I call you Soulbroken, I see past the guise and into wasted thing underneath the skin. You are food, your flesh smells of sweet meats and I can taste your soul on the tip of my tongue. I know you all live just to die.
So much arrogance for someone so weak and foolish that he willingly became a pawn of the Chaos Gods. You are even more pathetic than followers of the Corpse-Emperor.
Everything is a pawn of Chaos. It is our light, it is our darkness, it is all that is beautiful and ugly about ourselves, and we rarely like to admit how ugly we really are. The difference between you and me is acceptance.
Chaos Gods show us the true side of the world! Chaos offers eternity filled with unlimited might, undying followers, granted wishes, pleasures of the flesh beyond imagination. Chaos is power!
And the fact that we are strong enough to fight our darkest side, while you submit to it because you lack the willpower necessary to keep your mind free. And yet despite all the words you are just a weak pawn, a plaything of Dark Gods that will be discarded the moment you are no longer useful.