Dragonball Z (is girlier and has deeper character development than the original, without deviating from what is shown).
  That's another thing. Akira Toriyama lets people make DBZ movies that don't fit into his story at all, so I wonder if he'd really be opposed to a fanfiction.
  But I don't see how I could sell a fanfiction, and I'd rather use the non-trademarked ideas for something totally original.