Changes for new* Aatrox
I would embrace his immobile, juggernaut form a little bit better and make him more fearful to get close to.
The Darkin Blade (Q): ~ Base Damage changed to 5/25/45/65/85 from 20 - 80 ~ Ratio changed to 75% AD at all ranks from 64 - 80% ~ (Damage amp % unchanged) ~ Knock-up duration change: 0.4 / 0.7 / 1 second from 0.25 second all casts
Umbral Dash (E): ~ Passive healing change: From based on % of damage dealt to 6/8/10/12/14 (+15%BonusAD) (+10%AP) for every enemy struck from attacks and abilities, triples to 18/24/30/36/42 (+45%BonusAD) (+30%AP) against champions and epic monsters.
(This would just be more efficient healing and gives Aatrox his tank-steroid to be more reliable by removing the resistance factor from the equation.)
World Ender (R): ~ Blood Well and GA effect removed. ~ Cooldown reduced to 10/8.5/7 seconds from 140 - 120 ~ Bonus attack damage removed ~ Fears ALL nearby enemies for 1/1.25/1.5 seconds upon cast, 3 seconds for non-champions ~ Gains one-fifth of the bonus movement speed while in combat with champions and structures, regains full movement speed when out of combat ~ Cooldown begins when effect is ended, cast again to end the effect ~ Duration is unlimited, turning it off is for the AoE fear when you cast it again when it comes off cooldown; emphasizing the fact that Aatrox has wings to fly around the map and granting skill expression to choose between map mobility or a game changing AoE fear.
(Personally I do not really care much for a GA effect at all and a change like this would make the name World Ender more impactful and feel better for the user, and with a more efficient heal for a juggernaut will not need the GA effect anyways.)
These are just my thoughts with changes I would like to see to Aatrox. Changes that make him more fearful to get near and actually feel threatening and terrifying, right now he does not really have much going for him that makes him feel threatening like going against a Darius or Illaoi.