But thats not how it works if its not OP now it will be in a few months and then it will be too late. You cant raise the bar and then lower it on demand therefor its safer to just not make them stack. If anything I would remove the set effect armours **tali/opaniel** (that nobody has right now) and decrease the price of armour refinement kit in badge exchange so people can get skill def armour. You can still use chim boots helm and gloves while having 45% sd (if they fix that).