Once again Riot is nerfing the core identity of champions and not their excessive strengths
Take Yasuo for example. His main theme is Wind, and he revolves around wind techniques and shields to fight and dashing around using wind techniques only he mastered, but instead Riot nerfed all of that and kept his excessive double crit passive. Yasuo does not need that whatsoever, it's not his core identity at all, and he needs this double crit removed and a revert on all his nerfs from the past. You can also rewatch his champion spotlight and at the beginning they say what he is and his main theme with no mention of "Double crit is most important!"
Now take Zed for example. They also nerfed his core identity by taking out his huge outplay theme with shadows by creating a one second delay on his ultimate rather than nerfing his excessive strengths like wave clear, split push etc. They instead took out his core theme of dodge and out playing with shadows. Riot even stated in the champion spotlight: "He relies on sending out living shadows that mimic his abilities that allow him to reposition mid fight and quickly strike down his foes. When expertly played, Zed can kill his opponents before they know what even hit them". NOW THAT'S what his identity is. Not going in and having to wait a whole second and getting completely CC'ed or bursted by someone else. This makes Zed so predictable and it makes him even more limited even though he is ult reliant. No where does it say that Zed needs to wait to reposition himself in fights, he should be able to do it instantly, not wait
Tl;dr: The Zed nerf needs to be changed back, it's the wrong direction in changing Zed. You need to keep his identity. Instead you should look at his extra strengths like wave clear and change his passive so it doesn't work on minions just like Ekko's W passive which only works on champions. Zed is an assassin, not Ziggs.