Excluding the mythoclast which was already good enough already, none of the other vault weapons have had an increase in attack, making them because less useful outside of the vault, the vex shredded everything at 300, and the other weapons can't keep level with the new dlc weapons, there should be a way to upgrade them using a material like you can with exotics at xur, all excluding the mythoclast should be allowed to do this in my opinion.