I like idea of Nick being Dark Lord himself. He is way to "perfect" for Sabrina, has same interest like her, researching her father's life, and encourage her 'ship with mortal Harvey. He is so full of ...hm,"understanding". He is hiding something for sure.
But he did say Dark Lord is jealous one and that's way he is envious of mortal's life - they can chose love. Witches/warlocks must show adoration only to Dark Lord (and have orgies haha). This will come later at one point.
Harvey as character has potential if they go back to his family roots and make him witch hunter, but I doubt that will happen. Maybe? I don't read comics, so I am clueless. I like that he is cartoonist and paints some weird stuff.
Also, I agree this show is like "feminist declaration" but only in words right now, its mostly about man and to serve man, and to be by man. But I sense there will be some resist and challenge on "man's world" in season 2 or later. This show could last for awhile. I wouldn't mind. It's rich world.