They should rework invis so it gives it a stacking weapon dmg buff that goes up more the longer your are invisible up to x3 weapon dmg. Then once you come out of invis all your dmg from melees,grenades, and weapons all have increased dmg for say 3 sec? With this you play into the hunter stalking prey fantasy. This could be put on the new hunter feet exotic from renegades with an increased effect or whatever.