ADC's need some sort of Zhonya's (guardian angle's long cdr, is not enough)

There's simply too many viable assassins which can destroy an ADC at will. ADC's need something else to help them against, for example, a mid game nocturne. Guardian Angle at 5 min cooldown is not enough.

I'm a mid main, but I think ADC need help against these crazy assassins. Remember also that this is not LCS, this is average ranked games where ADC's are supposed to be protected by team, but aren't. ADC's need a way to protect themselves besides having a 5 min cooldown item.

I understand that this would nerf many assassins but at this point I'm wondering why even have an ADC when there's safer melee ADCs that do it better and safer.

Maybe that's what Riot wants.