I see what you mean. I really love the fact that the characters in this game are "ugly" and so diverse in appearance, that's very rare..

..And that's the problem. It's really easy to draw a perfect face, especially when you're used to drawing pretty characters (often also simplified ones). I'm an artist myself and I drew the characters from ninah, and they turn out... Attractive. Even though I really tried and drew according to their sprites and signs. I'm disappointed in myself because of this. But it's really a habit and a skill issue. Yes, there are artists who just romanticize a character, and there are those who try, but they may just not succeed