I disagree with the face idea. I believe it is good as it is right now, face would not make it a mirror, more of a picture.
I don't understand why people attack those who create simple models, like there is a need for complex ones only. Personally, I do not care if model was made under 5 minutes or 5 months, the very simple model can be extremely useful in certain situations.
I could try to create some terrain with this as the main doodad of certain place, sadly my map contain some kind of skin that turn mirror colorful.