i hate how zed is a late game joke
Have you ever seen a zed go legendary by 25-30 minutes and at the 45 minute mark get owned by everyone in the enemy team? I have seen it happening in many occasions, wether he was a teammate or an enemy, maye zeds have been so fes to where i thought the game ia over, only get owned later on in the game and lose.
Having a zed in your team it's like a 6v5 to your favor, it slowly becomes 5v5 and in the lane game it turns in a 4v5 for the enemy team.
Zed in team fights is pretty much useless right now as the meta is such that there is alot of cc and alot of tanks, this is a problem for zed as he gets locked down and killed too easy before he can kill the adc.
and
allow him to become a splitpush monster, so you can go off into a side lane and take towers incredibly fast, and if someone decides to come and contest your push, you ult them and pop them and continue on with your push. Zed does suck if you just keep trying to 5v5 teamfight, but there are a lot of other strategies in this game aside from 5v5 fighting.