Nidalee
I really don't understand everyone's problem with Nidalee. She's primarily played as an assassin now. Yes, she has the tools to get in, kill a squishy, and get out again. Yes, that can be frustrating, but her kit isn't anywhere near the most frustrating compared to other assassins. Hers revolves around a single target skillshot, albeit a long ranged one, traps, and jumping straight onto the enemy. It has it's clear drawbacks.
Zed turns invulnerable for a short duration, unloads full combo, then jumps back to where he was to wait for the death mark to finish his target. Even if you catch Zed completely offguard, if he has his ult, someone will die before you kill him.
Talon simply presses E, unloads full combo, and leaves with stealth. Unless you have a way to reveal stealth, he will near always get away.
Fizz, when he was played as an assassin had two gap closers, invulnerability, and cc.
Leblanc has either two escapes or two forms of cc, and she used to have a silence on top of it.
Lee Sin is Lee Sin.
Nocturne has a near global gap closer that shuts off vision for the enemy team, cc, a spellshield, and four different steroids.
Do I need to keep going? And no, I'm not a Nidalee player (although I used to be), I'm just sick of people complaining about champions.