Smoke grenades are still the weakest melee in the game, only good for a distraction. Haven't been OHK by things that can't OHK, so I'm either lucky or that's just not happening on console. Blame invis spam on the fact it's literally the only thing Nightstalkers can build into what with every Nightstalker exotic either buffing it or abilities that can proc it. So as I've said before, we can worry about nerfing invis when the assassin subclass starts getting abilities befitting an assassin besides a super that fails in basically all the strengths one is supposed to have. You can't nerf invis without nerfing the entire subclass and multiple exotics by extension, how many other subclasses have that problem? The super frequency is based on how many enemy crests you pick up without dying, so that can be considered your own fault for not denying crests and not winning your fights to pick up theirs. Balance is your opinion.