I believe that a non-profit renderition of a famous person, even a one using a photo of that person as a point of reference (be it for texture or pose) should be allowed.

It would be different if I were to sell a character pack with textures based on a photo I didn't take and didn't obtain rights for.

However, if we're dealing with the non-profit images, images done for the sole purpose of art or gratification to the famous face -- than such images should be allowed.

I remember that the U.S. law is based on precedences. Having said that: shouldn't we wait for the occurance of such precedence? That is, wait for a person (with the rights to the photos) to issue a warning? And then act?