"The Kog maw buffs still leave him worse than he was in 8.2"
That isn't the point, the point is that if they're going to give him back some power, they should do it in healthier ways than buffing his fucking right-click to heaven W.
They could have buffed his R, or even his Q, OR EVEN his E. You know, all those abilities which are skillshots which kogmaw tends to almost completely ignore when his W is broken.
Hell, they could do something like "for each consecutive R you hit on an enemy champion within 5 seconds, the damage is increased by 25%, up to a maximum of 75%"