Here's essentially how your idea would go. We create something like physical resistance ok, then we create physical piercing to balance the scales. Now we have 2 new custom stats to balance, debug, and various other things along with people suddenly spending more money for stats they really didn't need to start with. Now we by all means enjoy making money, because thats what keeps the server going, However it essentially just further seperates big spendors from little spendors which actually right now we're looking to even the playing field.