Awesome overview!

One note on greater shields, the 3 that give you resistance to a physical attack, also make you resistant to another.

Shield of earth - 33% resistance to blunt, 33% vulnerable to pierce
Shield of waves - 33% resistance to pierce, 33% vulnerable to slash
Shield of ice - 33% resistance to slash, 33% vulnerable to blunt

Someone correct me if I'm wrong on which shield gives which vulnerability.