Give him a new ultimate with more counterplay.
... really?
His ult gives you 3 seconds to deal with him before it pops.
That is more time than you get from nearly ANY other assassin in the game.
His ult places him RIGHT BEHIND YOU IN MELEE RANGE.
Early game, if you're low health, you should not be pushed out, you should be freezing at your turret range and pining for a gank.
If you have any form of CC, then you should be dropping it right in his face the moment he appears again.
If you have any form of ranged harass, you should put it to use and see to it he is also low health.
When he ults, CC him, burst him, kill him.
Or just do what I do, take exhaust, pretty much guaranteed the kill so long as you harass him down pre-6 and burst him soon as you both hit 6.