Good concept, but...
...I think there was a ton of stuff you could have done with this. It was a great idea, and well executed, but there were a few steps further you could have gone. I know you said you wanted to stay true to the original, but maybe you could have added an alternative mode where you could have some updates. One of the things I'd like to do with my punk rock girl would be change her hair color. Color in general would have been a nice addition. Adding a background (maybe from one of their albums) would have added something as well. Once again, I know you didn't want to change anything, but I see a lot of prospect in it now that you've replicated the original so well.