Probably not any better than a DH character can stay sane and uncorrupted. But then again, what story in the 40k verse ends well in the long run?
Well, humanity and the Eldar are still alive in a half-way unmutated and sane state even though they were dealt horrible blows 10,000 years ago. We don't know how it will end. And unless they are radical DH characters at least try to destroy chaos, not worship it while telling themselves that they are going to stay moderate.
Those were the extremes when you read the book, the woman who invented them was a full blown slanneesh cultist (even if she didn't know it) who had gone down the extreme path. A better example would be the woman that was the painter. Slowly she gets more and more corrupt, over the course of a few years I think, and works her way up from a obsession with perfecting her art to using bodily fluids and other things as material, to hurting herself to killing someone to use. Until the end she is a moderate slaneesh cultist, even if it all started due to a demonic musk.
I don't remember the book too well (it kind of frustrated me, I had expected the Imperials to be smarter in the past without the Ecclesiarchy and all that crap that comes with it. I was wrong.) However a painter killing someone to use his bodily fluids as paint isn't moderate.
For Khorne, any khornate general or leader is more of a moderate than the average Khorne marine. Most of what we know of Chaos and the gods direct followers are through the chaos marines. So of course we attribute Khorne to things that the former world eaters would do, not even looking at other examples of Khorne cults and followers in WH and 40k. A serial killer who fights his urges, a vigilante that enjoys the thrill of battle, a soldier defending his family or home are all possible moderates.
We know of the chaos marines and the daemons. The only other Khorne cultists that come to mind for me is the Blood Pact. Okay those are not mindless berserkers but they still spill lots of "blood for the blood god!" Something a serial killer who would fight his urges or a soldier defending his home wouldn't.
Blood Pact said:
Considering the types of aliens in the universe, and how utterly hostile like 99.99% of them are, I don't think the Emperor's stance is all that extreme.
Consider the Laer, how Fulgrim was being a xenophobic jerk when he decided they needed to be exterminated... oh, they had temples to Slaanesh. Yeah, like they would have ever been safe to include in to the Imperium.
Yeah, that was a good deed through bad motivation. But think of the Diasporex. They never did anything to harm the Imperium, they weren't chaos worshipers... Just an alliance of humans with diverse alien species.
Blood Pact said:
Or the Tau, who are also a brutal facist empire too, they just have good PR. Don't tow the party line? Well they have reeducation centres, forced sterilization facilities, or just plain ol' making you disapeer in the middle of the night. Tau fanboys must hate how Deathwatch has dirtied up reputation of the little blue gits, by making them just as mean and nasty as everyone else in the 40K universe.
I never liked the Tau and I never will. But that's hardly a reason for genocide.
Blood Pact said:
And there's the Eldar, who you can sympathise with over their slow slide toward extinction. But then there's that whole "genocide against humanity" thing some of them are hooked on, or just a general opinion that billions of human lives are worth a few hundred Eldar when it comes to balancing their longterm plans.
Yeah, unfortunately Eldar have a very similar amount of morons as humanity. It seems some of the bad blood comes from the meeting of Eldrath and Fulgrim, another big part was probably the Emperor ignoring the warning about Horus. That makes it kind of understandable that they see humans as expendable morons. It's pretty much the same way the High Lords and the Inquisition see them. Still, Eldar and Imperium are the peoples most likely to ally when it is necessary.