1. The duly elected minister of slavery not helping the slaves does not make him a villain, no. He is just a normal politician. It would be different if he were advocating for removing slave rights, but not advocating to expand them does not make him evil. Throughout human history many people were slavers whom we would not call evil. Cornwall is self-serving, but regardless of motives he made the lives of elves better. As long as he does not actively endeavour to make somebody else's life worse, his karma is still in the positives.
2. Trenero seems to love his family well enough. We are repeatedly told that he's an asshole, but he comes off as a businessman more than anything. Spending half an hournmaking phone calls to make his daughter happy should not be beyond his ability to care, if only so that his wife will be more enthusiastic the following night. As for asking Cornwall for help... How is threatening him better than asking for his help? Either way we are in his sights, may as well try to get something out of it. And then we can call him an asshole and say that we hate him.
3. Ashley looks like a crazy stalker. If the MC is supposed to be your player character, as the author stated, and not just another character in the story, you should have the option to call her out on her BS. Drugging people against their will is not okay. Threatening people with knives is not okay. Attempted murder is very much not okay. Supposed her logic bomb had worked. Now Andy the Android is dead. Do we laugh and wave it off as Ashley being a yandere?
4. This is called making up excuses. The doctor says that we need to purchase Maria. Whom from? Her? Why? Is it finders keepers? If so we found her, and we should not need to buy her. Is it a government tax? If so there is no reason for the doctor to get extra money for holding her. Either there is a special reward for discovering the crime or there isn't, but surely what matters is who reported the crime. The doctor cannot be selling Maria because Maria does not legally belong to her. That is the whole crux of the matter, that half elves must be owned, and she does not have an owner. If changing that were as simple as saying "you are now mine", we could say that and be done with it.
I want the game to be internally consistent, because that makes for a better story. The more excuses Ihave to make up for its inconsistencies, the less I enjoy the story. Thus, I would like the author to take a moment to address those inconsistencies. I think it would make for a better story.
Similarly, I would like to be given some actual reasons to hate the villains. Being told that their reforms weren't comprehensive enough makes me think poorly of the speaker, not the supposed villain.