User blog comment:TheTobarMethod/Nerf Worthy Champs + Your Thoughts/@comment-8324295-20130703122800

You just listed the strenghts of these champions, if you remove those they will be severely underpowered.

Zed is made to melt squishies lategame with a small chance of failing, but after he used his shadows, he has no escape, and his only ranged attack is his q on a 6 sec cooldown.

I agree with weakeing Jayce/Elise, but just small tweaks on them, like the ones Kennen got now on the PBE.

LeBlanc is the Draven of casters. She can gib people within 2 seconds, but if the enemy builds some resistance and hp, she can't do anything against them. If she gets fed and gets some penetration early, she will continue snowballing, but if you aren't in 'Wood 5' then this won't happen.

Khazix is all about the isolation, if the enemy is clever and stays close to minions or teammates, his damage output is lowered with at least 30% if you go all-in, which is enough to outdamage him.

The complains about the others are totally invalid in my opinion, every champ has it's own pros and cons, if someone only takes their pros like you did, then of course they seem too powerful.