As a DM, I have played with many, many brilliant players over the years. Some are quiet, some are energetic, some are hilarious, some are proper thespians. But the absolute best players take notes.
A new handbook to help you run a complete campaign?!
I have only ever run one homebrew campaign from 1st to 20th level, and it followed a very loose structure, one session at a time. I would love to write something that helps other DMs achieve the same thing.