They could do like most games of its genre ( I didn't say MMO so dont bash me for it ;) ) and have 2 seperate light systems for pve and pvp gear. Like the Iron Banner weapons and armor would only contribute to pvp damage and damage resistance therefore making it useless in pve and vice versa. It's worked before-not in this game but other successful ones. I'm sure most of you know what I mean. You're all smart ppl.