Stupid looking abilities. Warwick ult amongst other abilities.
's ultimate should be more like a 
ult except much much faster.
As if he's leaping a massive distance in a very very short amount of time. Not somehow gaining teleportation.
Which also means he will be immune to CC whilst he's jumping to the target and that it grants him vision of the target if they go into a brush or have a graves or nocturne w/e.
Then the ult applies.
His ultimate just looks so stupid.
's Decimate looks stupid as well.
He's casually walking around csing then BAM! Somehow he gains superspeed with his arms and has a seizure.
It's speed should be slower.
The ability will deal instant damage to a cone in front of Darius but will take a few more moments to hit targets to his back or far-side.
The ability could also have a feature that gives you an option to spin the axe to Darius's left or right. Such as: If your cursor is to the left of Darius then he will spin his axe to his left; if the cursor is to his right then he will spin his axe to his right.
Fix 
's Autoattacks please. It looks horrendous. As well as his max rage indicator.
