A rating system sounds like a plausible idea. I'm by no means a prude but I do resent having closeups  thrust in my face the minute I open the gallery. I recently posted an image with the figure wearing a 'sheer' 2nd skin outfit but  her nipple area is covered and she's wearing panties and received a 'nudity' warning because it 'suggested' nudity. If a rating system were in place I could have simply rated it PG without fear of it being ranked.