Grappler is a great example of how Bungie doesn't understand their own game or even play it. Grappler was really good for farming Encore in the first week and Bungie decided at first to remove Grappler from the game temporarily to "fix" it, that was then followed by Encore's removal to be "fixed". Now its returned to the game it now has 4 red arrows instead of the 2 it had previously and they nerfed the rate at which you regain the charges by having you get kills. But this whole modifier takes away your normal grenade to give you 3 grapple charges of which you cannot use the melee for. The whole point of the modifier was to allow you to go fast through activities but apparently using it for its intended purpose in Encore was apparently too much, then using it in any other activity is pointless because they keep throwing hard walls in your way to slow progression. This modifier doesn't exist for any other reason than to be a hinderance now.