It would give the gunsmith some business, and give us something worthwhile to use our Motes for. Also would give me a reason to have more than one type of the same gun. I usually just dismantle ones with worse stats to save on space. It would be fun having an Ice Breaker of each element. Edit: Legendary weapons only....ignore my greedy Ice Breaker comment. Edit 2: Maybe make it just one reforge session per weapon..once you leave the vendor after reforging, that gun can't be reforged again.