So, something interesting to me, that you don't get from looking at an individual playbook: not every rank is equally available. With the five we have, only the Dragon-Herald can start at rank 7. That is really cool to me, and worth doing some information-design to convey, perhaps. Suddenly, that's a reason to be the Dragon-Herald (as though I needed more!): to be the dirty peasant who the mighty lords cannot afford to ignore.