Great game. Love the story, love the characters, love the concept. However I have to say for a game about shapeshifting there's very little aesthetic in the shapeshifting mechanics. It would be cool if we could at least somewhat customize how we look or when but I love the game for what it is
My guess is that the game uses pre-rendered images for its graphics (I don't know for sure but most games like this do). Those don't lend themselves well to customizable characters as each combination of appearance traits requires another version of each image. So it's probably a technical limitation.