I disagree with your points on skips, they really don't track me all the much. I just go around a corner and they fail to hit me. The grenade and melee point is a good one but in a game like destiny where your grenade and melee are so vital its important to balance them, so theres no excuse why they shouldnt be taken down to the levels of others. Finally, yes it takes up two perks. But those perks, when used in conjunction are just way to good.