AP Yi does not DESERVE to stay alive in teamfights. AP Yi is supposed to be a refreshing, guaranteed hit snowballer. If he was supposed to be a tank, he would be more of a sustained tank.
At the moment he's just a binary "if-you-don't-cc-the-heal-you-lose" champion. That's not fair, and if it was then we need to give single-target spellvamp to Katarina's abilities and let Swain's Snare refresh on kill.
Yi is completely reliant on his team being fed, he functions as a janitor, if he goes into a fight and doesn't get a reset, he dies he will not survive the focus, especially when you had ignite and any form of interrupting CC (Which everyone has no now.) this is no different then any champion who does this. You are arguing fort he wrong mechanic to be nerfed, it's not meditate, it's RESETS. When a champion is designed around resets, there is no situation in the game for them to be truly balanced.