Out of my (going on) 60 builds, I have one Dragonborn. Just like I only had one CoC, or one Nerevarine, despite having hundreds of other builds. Its more fun that way, and broadens the RPing medium. You can effectively start making characters that seem almost NPC like.
Edit: Except for my Legate build, he had to start the MQ as well to finish the Civil war, but yeah.