Armour reflection.
I have realized that armour recently become very irrelevant. Abilities to ignore armour that swords, spear and bows have, together with 'bash' causes that once you have mid-late games armies battle turn in to contest who hits first. Sometimes it is bad to the point that it is literally one-shot situation. If i get them first, i one-shot them, if they get me first, I am dead. Recently i discover that there is no point in wasting precious metal on armour, i use it all for high level weapons, since armor provide little difference, and is very, very expensive.