[Lore]

The problem with Aatrox is, he's very poorly designed. He's not tanky enough for top. He has sustain, but only if you let him. And CC destroys him. His Q is his only real advantage because if he didn't have that, he'd just be kited harder than he is currently.

His passive makes up for his underwhelming kit and what he can do with it. Take that away and you have a squishy auto attacker who can't cause damage.

I personally take him bottom as my team's ADC with my girlfriend playing support. We found an overwhelming pair in him and Nami because with his Q and her bubble, you're CC'd forever. And ADCs are squishy enough to die pretty easily to that. I don't think he's a good top though because he's countered by most of the popular top laners.

To "fix" his flaws, they'd have to redo his entire kit. I don't think they should remove the invulnerable part of his passive, but it definitely has to be toned down a bit.