Can we make untargetability less forgiving?

And yes this is a rant about fizz. I understand he's an assasin but there needs to be some sort of consequence if he fucks up.

I feel like if the target was targeted by homing abilities or autoattacks before the target goes untargetable, they should still get damaged. Of course he won't be able to be targeted once he's on the pole.

Please keep in mind that untargetability and invulnerability are two different effects.