The Gods seem to be indifferent to good and evil. Thamagorga (sp?) is the only evil god and must go out of his way to bring suffering and misery.
Law for me is order and resistance to change. Chaos is dis-order and constant change. Artemis would have similar worship practices the world over with expected outcomes for expected behaviors. Xathoqqua worship on the other hand would be different based on the local practices with relatively capricious reactions to the behavior of his worshipers.
I think good and evil is determined by humans and their cultural beliefs. Do the Hyperborean gods care how the people treat each other? Only in so much as it impacts their agenda.
This is the way I handle it anyway. Your way will be equally as valid.