Did anybody else notice how horrible Gavilar Kholin is?
I'm not sure how to make spoiler tags...
Gavilar apparently wanted to return the Heralds, which is forgivable (even though all the Heralds are psychopaths/drunks/vandals/insane). But he apparently wanted to achieve this miraculous feat by turning the Parshendi into Voidbringers.
This is highly immoral, as nobody wants to transform into orcs, and this just feels like Gavilar did not understand the simple fact that the Parshendi =/= parshmen. To him, the Parshendi were just parshmen that could be sacrificed in order to achieve a greater goal, and he completely disregarded the fact that the Parshendi are people too. In addition, he seems to have forgot the fact that the Parshendi would not just sit around and be monsterfied, my guess is that he just thought that the parshendi were simply docile animals.
Conclusion: Gavilar is a callous monster.