To be honest I was surprised that there were only five Art of War missions in Age of Empires IV. There are nine missions in Age of Empires II: DE and ten missions in Age of Empires III: DE. Please add more Art of War Missions for Age of Empires IV!
I understand that an “optimal” way of playing has to be established and it is still too early to add more.
Surely the creators of the game know it well enough to create more than just basic Art of War missions.