I pretty stongly believe that making a distinction between who is a fan and who is a pro is not something we would ever want to do. It would further weaken the sense of fandom as "community," which is at the heart of who we are as a subculture. There are many fans out there who have strong writing skills, but have specifically chosen to not write SF/F as their career. The argument that someone might win an award based primarily on name recognition is a possibility in every category, not just the fan categories. That's a possibility that I'm willing to live with for the sake of the greater good.