It would be great if the Gunsmith could re-roll legendary weapons on Armsday. This could be treated very similar to the current Gunsmith purchases. 1) A weapon could only be re-rolled once per week. 2) Your Gunsmith rank determines how many weapons you can re-roll. - Max at 3 weapons per week? 3) Each re-roll requires some form of "payment" (weapon parts, glimmer, marks, etc.) 4) No limit on the number of times a weapon can be re-rolled (other than the once per week limit) 5) The re-roll is random like the re-roll for exotic armor. This would be great considering there are many legendary weapons that have ridiculously low drop rates. This method of re-rolling could still possibly take some time to get the perks you are looking for, but at least you know you have a chance each week assuming you have the "payment". This would make the Destiny experience better instead of waiting for who knows how long to get another drop, which may have a crap roll again.