Revert Aatrox, (hear me out)
It's not the same champion. Either make a new chanpion like old aatrox or revert his passive and give him the damage portion of his old W on the new one as a passive. The idea of a rework is to make the champion more balance while retaining the identity of the champion and the rework did neither of that, none of his abilitys are the same let's compared Aatrox's old abilitys to the new one.
Old Aatrox - passive, blood well, Aatrox gains a stack of his passive up to 5, when aatrox lands an empowered damage auto from W bloodprice he gains one stack. Ability also generate stacks of his passive, once he gains 5 stacks he becomes hellbent, when Aatrox is hellbent he gains bonus base AD and attack speed and apone dying he revives. He doesn't revive if his passive isn't up. Aatrox must stay in combat to keep his blood well up. Leaving combats makes Aatrox's blood well diminish.
Q(dark flight) - Aatrox jumps in to the air and landing in a target location targets in the targeted area take physical damage, those in the center of the impact are knocked up.
Aatrox's old W - bloodprice/bloodthirst his third auto dealt more damage or healed him based on missing health, he didn't heal unless he switched the active on his W. So his auto attacks where actually an ability.
E (blades of torment) Aatrox release the energy from his blade that slows and deals damage in line that gradually becomes narrower based on the distance his E traveled. It was a skill shot that was hard to land for an inexperienced Aatrox player. that's was is main harrasss ability in lane
R(Massacre) - Aatrox draws in the blood of his foes dealing Aoe magic damage and giving him AD and attack speed and bonus range.
New Aatrox - passive Aatoxs gains a passive auto Aatack that deals a percent of the targets health. His abilitys lower the cool down.
Q - three hit riven Q that knocks up
W - swain E with pull that you can walk out of
E- pathetic riven dash that has a passive healing factor based on damage.
Solution, revert Aatrox or give the new Aatrox the 3 hit damage part of his old W and bring back his old passive without the revive. And make his new R ultimate a Aoe Nuke thay deals damage and a steroid that gives range and attack speed and AD. The rework made Aatrox a battle mage not a juggernaut. If you disagree then look up the two classes