^It's not just about career success, though, it's about the breadth and variety of one's own work. If all you ever do to develop your craft is Trek, Trek, Trek, then you don't really bring anything fresh to the franchise if you do get hired to write Trek fiction. Keep in mind that most of what a novice author writes will never be sold. Most of it will end up being for practice rather than profit, for honing one's craft and discovering one's voice. I've written a whole lot more original fiction than I've sold, and the experience I gained and the concepts I developed in the process have been an important part of my voice and style as a Trek author.