The Aatrox Rework
Let's make the Darkin Blade feel like a motherfuckin blade. Drop the Q and the stupid wings. Make him slice through his enemies and give him bonuses for sating the thirst.

Sate- Aatrox steals health from his target on every third hit 20 / 25 / 30 / 35 / 40 (+ 25% bonus AD) every second hit during massacre
Dark Flight- Attrox dashes towards target location dealing 70 / 90 / 110 / 130 / 150 (+ 30% AD) and applying on hit effects to all enemies hit while increasing his attack speed 30% +5% per enemy hit (max 55%) which last till Aatrox leaves combat for 3s
Blood Thirst- Consecutive hits on enemies deal increased physical damage 10 / 20 / 30 / 40 / 50 (+ 15% AD) attacking a enemy champion grants Aatrox a stack (4 stack max) of Sated Thirst increasing Sate healing (50 / 100 / 150 / 200%)
Blades of Torment - Unchanged
Massacre- Aatrox basic attacks gain a cone (12s) (slightly smaller than the size of Rumble flamespitter) applying Blood Thirst to all targets hit. If Aatrox takes fatal damage during this duration he consumes all Sated Thirst stacks healing for 75-300 +25-125 per stack ending his massacre.
http://i.imgur.com/t1Ab8qo.png?1
Tl;dr No health cost, 12s window on his res, strong if he fights but weak if he runs, no more getting knocked out of your Q but no more cc outside of the unchanged slow, it's a buff, but also a nerf to his anti-fun aspects both while playing and playing against.