dankohn asked: Is Kevan Lannister, as Varys said, a "good m[a]n in service to bad causes"? He is a war criminal for what he did in the Riverlands with Gregor. But, otherwise, good guy?
He’s a’ight. By Lannister standards he’s practically Gandhi. By my standards, not so much, but he lacks his brother’s mercilessness, his nephews’ arrogance, and his niece’s vindictive rashness, and as Varys says, he was likely to end the bloodshed in fairly short order. You wish that he, like virtually all Westerosi lords, would take a harder look at a system that enables you to make decisions like “let’s burn the riverlands” with impunity, though.