I watched all of those a few weeks back. Awesome vids, and very inciteful =D
I agree 100% with his take on "spearmen controlling the flow of battle" most of the tactics he teaches can also be used with stabby tip glaives, when you jackhammer with a glaive you have the opportunity of getting between two shields, and using the red side of the glaive to do some dmg behind their shield.