@Riot I don't think nerfing Kha'zix non-isolated Q isn't the right way to nerf him.
> Kha'Zix > Taste Their Fear (Q) > Damage lowered to 65/90/115/140/165 from 70/95/120/145/170 > Bonus AD ratio lowered to 120% from 140% > Isolated damage increase up to 65% from 50% > Evolved Reaper Claws (Evolved Q) [CD Refund lowered to 50% from 60%]
The base damage nerf is pretty on point. This will slow his clear speed, albiet slightly. I also like the nerf on his evolved Q cooldown because that will also be mainly used to slow clearing of objectives and camps. But the latter changes cause him to needing his target to be isolated for a guarenteed kill. Needless to say, he can do that. But the nerfs to his non-isolation damage reduces his effectiveness significantly in closely-grouped teamfights.
This nerf makes him way more telegraphed and predictable, which I believe is a bad thing.