Hard to tell really. I'm all for lots of different materials, but I want them to have certain abilities rather than everything dealing with Armor Class alone. Too many materials each with their own Armor Class, makes the class rating too powerful. So I'd like to see materials (incl. weapons) have natural resistances against elements built within them. Fur armor, not very resistant to fire. Metal (conductive) not very resistant to shock etc. So a character doesn't end up with simply a defense value, or an Armor Class, but also natural resistances to the five elements (fire, frost, water, air, and earth, or whatever they may be). Finally there should be natural bonus to appearance. If you're a kid, what do you prefer santa to look like? Wearing nice dress, steel armor, or a full daedric suit? I swear I'd never sleep again if I saw someone in a daedric suit