I am currently running this build and whoo boy, thank you for doing the math! It's an amazingly fun build to run even if Yorick is in a tough spot currently. My only comment is you may want to look back as they seem to have reverted the changes to Sunderer you mentioned here. It now gives 400 health and does max health damage once again!

I created an account just to thank you for this guide after stumbling upon it an hour ago. I loved your approach and the way you designed around his weaknesses. Will play about 10-20 games and report back. Happy new year!