Armor is your health, that is the core issue of the armor system. As soon as your armors are gone, you are mostly permanent CCd anyway, therefore making Health itself pretty pointless.
I disagree completely, as my easiest run through Tactician is with 3 Glass Cannons.
Enemies do so much damage on Tactician that armor is an afterthought, your best bet is stacking evasive skills on multiple characters (Evasive Aura, Uncanny Evasion, Chameleon Cloak, Smoke Clouds etc)
