I noticed Akali is extremely hard to blow up to the average assassin
That seems to be a problem considering if Zed even makes one mistake he dies.
His base health is 1939 at 18 with 18.1 hp/5.
Akali has a base hp of 2033 with a 19.4 hp/5.
I want to note that Akali can blow up teams and has innate sustain can is much more capable of sticking to people and who's ult can't be stopped, and even if you do manage to displace her out of it she has 2 more casts that can hurt for way more than Zed's combined. And she has innate sustain in her kit.
Another thing I noticed is assassin's randomly get a lot of armor considering they aren't really supposed to be taking damage to begin with. So giving them armor just makes it even harder to counter play them. (85-86 base is a lot for an assassin even at max rank).
Also looking at Talon, he gets about 7 less AD and 5 less hp at max rank