About Darkoath, If what I read so far is accurate and I understand it right, I really love the direction they are taking.
The Darkoath have every right to consider themselves good, or right or being on the right path. Don’t forget that even in the current real world religions, the newer texts are somehow watered down. Now, in the old texts things were totally different. Take the Old Testament’s depictions of the Abrahamic God, or for example the Greek Gods.
They have passions, they may act spiteful or vengeful or literally evil. They will send plagues to the enemies of their people, they will sceme, they will kill and maybe give birth to hideous monsters, but for these people, these were their gods.
Now imagine a barbarian, being born in a society where those are their gods, and guess what? Those gods actually exist. I love the idea of the proud tribesmen that are undeniably Chaos, but can doubt and mock and compete with their gods, and not be completely one dimensional, null, killing machines.
If done right, Darkoath can be one of the most interesting factions in the history of Warhammer.