I certainly disagree with about every point he made. Didn't see much worth responding to except for the question on squares vs hexes. The reason I chose squares for flat terrain is that it limits a unit in a line with other units to attacking the unit in front of itself. Note, this doesn't affect facing, since you can face any way you wish so long as the counter doesn't cross an area border. In most flat terrain areas, this gives you 360 degree facing potential.
Lets see, what else.
The rear line unit of the legion is meant to go up in strength at one point. As explained above, thats when the fresh triarii component comes into play. I've had the Carthaginians win at Zama frequently, but they are rarely in command of the field unless playing the free set-up option. In one, where Hannibal escaped with only himself and Hanno, the Romans only won by one point. The rest of it is pretty bizarre.