Would it be possible to have a second row option so we can have multiple perk options. Even better still would be to have the perks be slottable like a mod. Available only after you have purchased them Maybe after the weapon reaches 30 or 50. I have 3 calus mini tool as I wanted different roll options. Much prefer to have just 1 gun EDIT: A few replies point out that Bungie have thought/spoken about this so fingers crossed it can be implemented soon