So I have compiled a list of all the different base armor types I want to make. I have started working the numbers out and what you have both said has made some sense but the research I have done I have made a few changes to armor types.
Leather has a bonus to blunt defense as the leather padding acts as an absorber (+5 * Tier additional armor for a set).
Chain has a bonus to cutting as this is how it is designed to work, or put another way it has a weakness to piercing (it has holes) and blunt the force isn't stopped by the rings. However because of the weight it has an inherent dodge penalty of (test version) -10.
Plate has a bonus to piercing as for every reference I can find says, it was designed to help deflect small blows, arrows and knives. You could also say it is weak to cutting, while it deflects a blow that sword can meet a crevasse and cut through the straps and such holding it together and the person below, and blunt because plate unless it was very thick got crushed like a tin can along with the person below that piece of armor. However because of the weight it has an inherent dodge penalty of (test version) -20.
Crystal I have made it lighter and it protects less along with the following bonuses.
Chain has a total of 10 additional MR, I have not decided whether to add other types of resistance or just leave it a flat 10.
Plate is 20.
I have not yet added in the different variant armors for Athican Leathers, Heavy Chain, and Light plate but have some good ideas how to implement those. I have left enough room between tiers to plug them in. I am thinking Athican Leather armor though is going to be very attractive after this though.
That's it so far. Let me know what you think.
P.S. None of this is coded yet, I am going through the number first then will start plugging and chugging the code.