Overall: The game is, to me, better than some of the best VNs out there (an example is Depraved Awakening) mainly because of how ambitious it is, and how good the villain endings are. Despite all the flaws, it has potential to be top-tier, if the author puts in one last effort to polish everything up.
Ending: My favorite is where
Improvement: I wish there'd be a true final version, where heroic endings can include harem scenes. Your choices with LIs remain valid, you don't have to choose one to end up with, and you can still feel good about saving the world. Ending up with many lovers shouldn't make you a villain, or disqualify you from being a hero.
Character: Katherine and Dahlia are top-tier. Same character model, but I adore the personalities and how they differ. Katherine is shameless, loving, proud, slutty, brilliant, all in one. She is completely faithful, but malleable; either she can be totally devoted to only you, serve you along with other girls, or engage in wanton exhibitionism and cuckolding for you. And she's joyful in all of those situations. Honestly she can easily be the best slutty faithful wife ever represented in any VN.
Dahlia on the other hand is innocent, naive, pure, but also corruptible. I was very excited to find out I could convince her to join our side, and that we could knock her up. I love it when we're able to see 2 separate characters in 1 model.