Fizz E Balance Idea

So, Fizz's E Ability, Playful/Trickster, seems to be resonating around the forums and being referred to as "Trollpoll" I bought the champion to see what made people complain about him being "OP" and I found out. His E ability makes him untargetable, although if it is an ability that has already targeted and is mid animation heading towards fizz, he still could dodge it. Example being Taric's stun: Tarics dazzle ability animation is glittering towards the enemy fizz, he's supposed to be doomed, the fizz uses his e and successfully dodges the ability because the ANIMATION of the ability reached fizz after he activated his e ability (in the process of him being invuln).

What I'm trying to say is that fizz shouldn't be able to dodge abilities that already targeted and are heading towards him. If taric clicks the stun on him, then even if he's activated his dodge ability then it will land. This should take out the MAJOR overpowered factor that he has. Also, it makes him more counterable. He's powerful against skillshot champions, although the moment it becomes point and click he's not as strong.