For being a "shitty game", it's actually pretty good.
If I were to nit pick, it would be things like balance or making the pictures/content feel more consistent. I don't mind the different sources (anime, real porn/cosplay, etc), but things like having a girl's picture up when an 'action' animation is playing involving her, or even making the images used in those animations more consistent with the body type of the original girl (e.g. if the girl had a distinctly smaller chest and you used the grope attack on her, you wouldn't get a groping animation of a set of huge boobs).
If I were to nit pick, it would be things like balance or making the pictures/content feel more consistent. I don't mind the different sources (anime, real porn/cosplay, etc), but things like having a girl's picture up when an 'action' animation is playing involving her, or even making the images used in those animations more consistent with the body type of the original girl (e.g. if the girl had a distinctly smaller chest and you used the grope attack on her, you wouldn't get a groping animation of a set of huge boobs).