Aatrox's primary problem's him having so much untapped potential
Aatrox's often regarded as one of the worst champions ever released and he's often the topic of discussion, be it talking about potential buffs, replacing his current ultimate with Sion's old "Cannibalism" ult and the general consensus is him being somewhat disappointing.
But what's the underlying issue here? -Is it his kit being incoherent? No, it does synergize well with itself -Is it him being a bad champion? Not entirely, seeing that a skilled Aatrox can indeed carry games -Is it 42? perhaps.
No, the real problem here, and the main reason Aatrox needs some kind of rework, is him not delivering on his champion fantasy.
We've got champions ranging from eight year olds throwing flaming teddy bears at you to celestial caretakers that prioritize chimes over helping their team out. There are 129 champions and each and everyone's unique in their own sense, even the more common tropes have a certain spin to them.
And then there's Aatrox. He's a demon dude. On first glance you see the quintessential demonic warrior; red skin, wings, horns and a demonic weapon.
Well maybe his kit's unique.... well... Not entirely; Aatrox's kit is just a dive-fighter kit you could slap on literally any other champion and there wouldn't be a lot of thematic clashes. That's right, Aatrox's kit is disappointingly mediocre and a cookie-cutter cutout, so much that it's almost sad.
**Aatrox is a demonic entity that inspires battle spirit on the losing side of the war and allows them to overcome any odds and be victorious ** Aatrox's lore makes him out to be almost a support-ish type of character, a savior of sorts. He sweeps in, helping out the losing side and spurring them to commit Aatrocities they only realize after the bloodshed. For victory comes with a price; bloodlust, regrets and knowing that you committed ultimate sins of war.
Aatrox is just like Tahm Kench, he's a demon that thrives on human emotion and his type of "pact"'s not entirely different from Tahm's. Tahm offers you absolution and a new beginning, only to later on take everything from you whereas Aatrox offers swift immediate victory but life long regrets and bloodlust
Does that mean Aatrox should be a support?! NO! The last time Riot pushed a fighter champ bot lane was an outrage and this should never happen again. But what could be done to Aatrox?
Simple; Aatrox should be all about inspiring his allies to fight harder and provide strong combat buffs. He's a diving fighter, which he should remain. We don't want a Tank Aatrox.
Aatrox should be all about diving into the enemy team and inspiring his allies to follow his lead and fight at his side.
Imagine Aatrox diving into the enemy ranks with his dark flight, his wings like a torn cape as he lands in the enemy front line, surrounded by the opposition waiting to tear him to pieces. But instead of dying and submitting he swings his demonic sword, the Battle being his canvas, his Sword his painting brush, Blood his colors. This battle will be his masterpiece
The mere sight of such a powerful entity joining you to overcome a much stronger enemy fills you with battle fervor and the will to survive!
Aatrox should be all about inspiring his allies to fight alongside him, leading the charge as he dives the enemy. Almost suicidal but keeping alive in the midst of battle by increasingly stronger lifesteal and perhaps even strong combat buffs getting stronger the longer the battle rages on.
Aatrox's core problem is the lack of thematic cohesion and him lacking unique factors that truly paint him as the demonic entity inspiring the losing side to carry on and prevail
Sure, giving Aatrox Sion's old ultimate would be fitting but why go back to something that was broken and unintuitive and toy with other ideas we can add to our Darkin Blade. Be it AD/AS team buffs, Armor/MR buffs, MS when moving in his direction, his life steal spreading to nearby allies, him emitting auras, etc.
The possibilities are limitless and I don't think I'm qualified enough to make any more assumptions on what Aatrox "really" needs.
~M.M

instead of a Xin Zhao / Tryndamere ripoff. He should be in the same category as
, a mobile light fighter caster (in between a juggernaut and assassin) which is already so few in number compared to the the role Aatrox is competing for: the attack speed backdoor fighter (there are like 12 of them)
etc etc etc when there are so few champions like Riven and Fiora? Mobile light fighers who are caster based and can dish out a lot of burst damage and use caster-type mechanics to sustain instead of relying on the ever-boring aa lifesteal.
, which is currently being looked at.
And remember that Taric and Yorick are the next 2 big reworks.