I’ve looked at all my machines and see dimpling and scratches on all of the play fields. The older routed machines are smooth in high traffic areas, which supports that they have been pounded smooth by 1000s of plays. Newer machines with newer clear, darker art, and brighter lighting highlight dimpling, but dimpling doesn’t affect gameplay, nor does it affect the art. If you want a perfect playfield, simply refrain from plugging the machine in. “Problem” solved.