Every single named character from the first three games has appeared in WoW except Garithos. Why?

>Be a black-and-white bad guy written in the early 2000s about how racism is bad
>Do nothing but complain about inferior races the entire time as being untrustworthy liars and demon-worshipping cultists
>Elves actually are drug-addled demon cultists
>Naga actually are backstabbing demon cultists
>Undead actually are genocidal mass murderers
>Orcs actually are city-destroying murderers
He was wrong about the dwarves, but that's it.