Assassin rework idea
Talon:
Passive: talons attacks and abilities cause Enemy's to bleed. Bleeding enemy champions leave behind bloodied footprints (even when stealthed)
Q: talons next basic attack causes the enemy to bleed (separate from passive)
W: talon throws knifes in a cone (they do not return)
E: talon appears behind his enemy showing them and increasing bleed damage they take for 8 second
R: Passive: talon gains movement speed when moving towards bloody Enemy's. Active: for 8 seconds talons basics attacks add their own stack of bleed to enemy champions he hits. Talon can reactive this ability to go invisible and gain movement speed.
Akali:
Passive : Akali basic attacks hit twice one with her main hand and one with her off hand. Off hand strikes deal 50% damage and main hand strikes deal 75% damage.
Q: Akali throws her off hand karma at an enemy disabling her passive and dealing damage. The karma sticks to them and akalis next basic attack against then deals 8% of their health damage and retrieves her karma. If karma retrieves her karma the cooldown is reduced.
W: Akali goes invisible for.75 seconds and gains movement speed. Her next basic attack slows an enemy hit.
E: the same
R: Passive : whenever Akali attacks she is healed for % of the damage she deals Active. Akali dives in a direction. If it hits an enemy they take Damage and the cooldown is refreshed. damage is reduced each time you use it consecutivly

fizz:
passive: complitly new
q: the same with small changes
w: new mechanic
e: the same with some changes
r: the same with almost no changes