Aatrox should not be interrupted

Recently, they "fixed" his Q so that it can be interrupted both during takeoff and descent.

But since that is the only ability he has where he actually does anything with those wings, and it's his only engage tool (while also being his only escape tool, and despite much stronger champions like Rengar being in line for having more than one of each, Aatrox is still left out of that group).

He shouldn't be able to be interrupted during EITHER part of the ability, at the very least. What kind of immortal ancient god of war can be interrupted while jumping as if he were some sort of yordle? (Including one that also has an ability with just as long a hard CC with just as a larger hitbox, that can't be interrupted. )

Maybe reduce the knockup duration to compensate, but it's ridiculous that it can be stopped by every CC.

And please don't pretend this would make him too strong. As it stands the only way to play him well is to never fight with your passive down and engage, prepared for it to be expended the instant after your knockup. He is nowhere near decent, let alone strong.