I've already said this on another post but:
- Passive - Assassin's Mark
Akali must leave the circle to empower her kama
To maximize damage, Akali needs to rotate her spells and basic attacks while moving in and out of the circle. This gives enemies opportunities to escape or counterattack.
Extreme energy cost (half of her entire energy with one point, scaling down with levels)
Healing only works when her energy level is at 180/200
Low range
Small target area
No longer allows her to blink
No longer slows enemies within the effect area
Lasts 5 seconds instead of 8 which increases upon level scaling, but only to a maximum of 7 seconds.
Shroud duration can only be extended by popping in and out, but this gives the enemy opportunities to attack
Spell only begins CD once the shroud fades
High CD
Akali backflips a distance from the cast-point and so a miss can lead to enemy escapes
The target must be hit with the shuriken for her to dash to the target, but this makes Akali's attack and engage path extremely predictable
High CD
The first cast deals little damage and applies a 0.5 second stun. The second cast is the main damage and so once the first R is used, the second cast is predictable
First R cast range is not very long (barely longer than her Q range), the second cast has an increased range.
It takes 3 (or maybe it's 2.5) seconds for Akali to be able to cast the second R and stays constant through all levels and CDR
High CD
So now, unless extremely ahead, she cannot simply blow you up within a second using only R>Q>AA>Hextech Gunblade>Electrocute. The rework changed her to where it takes time for her to deal her damage and it gives enemies counterplay options. She basically embodies the 'dodge in and out of a fight' style and must play safe early until she has a viable way of getting on top of the target. She does not have a constant source of sustain because the heal only works when her energy is near-full. There are positives to the rework that I haven't mentioned because this was just meant to be a list of her weaknesses.