Everything in Black Crusade seems to indicate that Chaos is all about going to extremes, but does it have to be that way? Are there any 'moderates' in the forces of Chaos? I know that most of the setting - including the Imperium - focuses on the extreme bits for the sake of the wargame, but we see it done a bit differently in the novels. Gaunt and Cain show us a more moderate view of Commissars and, from what I've read on the Only War boards, this seems to be an appealing approach to playing that game. Does a similar feeling exist in Black Crusade?
Are there Chaos Space Marines that think that spikes, horns, and chains are just silly and not something that should be applied to power armour? More seriously, are there those that hate the Imperium but not their own humanity?
I ask because I have some difficulty accepting some of the cartoonish evil that seems to come up with Chaos (much as the carttonish martinet bit seems silly when done with IG Commissars), and I'm wondering what takes others might have on Chaos as "the bad guys" of the 40K universe that are less gonzo.