BioStructures/ Organic Autonomy 

The new category that I would create would be BioStructures/BioArt, and it would involve the use of organic materials to create art pieces.  Organic materials can be anything from trees to plants.  This is to add an element of life as the art piece would decay/change over a period of time.  The art piece would have to be made up of at least 90% organic materials and the remaining 10% can be anything else.  This would be an interesting category because people would have to find a way to work around and embrace the life cycle aspect of the materials and try to create meaning artworks around that constraint.