They make me want to crush their soulshards after ripping their tongues to see them desperate when I will sacrifice them to Slaanesh, so yes, voice acting is good.
All I care about is their pathetic whimpering after I break open their feeble hulls with just a single macro-cannon shell and their entire cowardly crew is vented. Besides, the Ork ships had poorly maintained engines which detonated from overuse, only way to explain their destruction. They didn't even notice the Eldar at all in the trailer, clear proof that they did nothing.
Naw naw naw, they were telling them to stop destroying his ships. So at the very least the Ork realized something was blowing him up.
So many angsty and edgy little children bickering and crying about their superiors~ Oh well, such is the meaningless life of a mon-keigh inferior mongrel...
I'm surprised you can see anything at all, mon-keigh. Of course your primitive kind lacks proper vision...in more ways than one.
Considering they pretty much only have a few shouts and taunts... I'd prefer working on their models rather than personality.