Sorry, I didn't have a hand in making the rules and thankfully I no longer have to see that they are enforced.

All I know from reading the Thumbnail Policy and my brief stint as a co-ordinator, that if you want to have a full depiction of your image in your thumbnail, the image itself cannot have nudity or violence in it.

Why is editing the thumbnail wrong?  I can't give you a valid reason because I personally don't see anything wrong with doing that, however, it's Renderosity's site and they make the rules. And their policy is that they don't want the thumbnail edited to be something else because they consider it "misleading", and have stated that  if you have nudity in the image you have to use a cropped thumbnail.

What I'm failing to understand here though, is having looked at your gallery thumbnails, I see that you have been "creative" and have been following the Thumbnail Policy properly and have some very attractive thumbnails.  Why all of a sudden this protest thread?

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi