Can we do something about Kennen's non-existent late game?

You can get off a perfect ult on all enemy carries, hit them with Rush and Surge, and land a Shuriken, and you still will not do enough damage to kill a full build carry.

And then you die, because everything is on cooldown and you're standing beside a carry that still has 50% health when you come out of Hourglass.

I mean, assuming Kennen even gets to late game, considering he has no way to CS once your team starts grouping, because his wave clear requires him to run into the opposing team.