Vayne is an anti-hero, and we do not know his full story arc, because this is the middle installment of the story. Murder does not necessarily make one evil, nor does building an empire.

Without a strong governing power civilization cannot exist. Archades is facing civil war. It is necessary for Vayne to assume the throne quickly and dissolve the Senate before this occurs. He chooses not to kill Larsa, even though it would seem the quickest way to secure the throne.

Vayne's ambition seems to be bring the dawn of a new era free of theocratic rule. It is also blazingly clear that his real goal is to create tools to bring down these heavy handed 'gods.' He gambled that his brother Larsa would remain partial to Vayne's leadership.

The immediate response is that Lady Ashe assuming the throne and the open dialog between the three countries is good. I doubt this will last. She is a single woman who has all the political savvy of a donkey. XII-2: Gee all of Ivalice is at the brink of war and look at that big shiny nethicite ...