User blog comment:Deshiba/No counterplay/@comment-8919271-20140517073634/@comment-4022742-20140518143544

Shaco does have counter play though, he's annoying as hell and when played well the early game is unparalleled. But when he doesn't catch you by surprise, he's squishy enough to get blown up by basically anyone. And his late game is pretty non-existent if you don't give up your mid game and farm yourself tanky at that time.

AP Master Yi was a problem, which they saw and fixed with the current AD YI.

On the flip side, Vi just has too much in her kit to deserve that unstoppable IMO.