Guardian Angel and the AD champions that want everything
Guardian Angel is a defensive ítem; that means it should be defensive; that means it shouldn't give AD.
I'm really tired of this kind of things: ADCs build only AD ítems, then complain because they are easy to kill. Building "glasscanon" should always be high risk- high reward, no low risk - high reward.
Now we are going to see AD champions that can build 5 ofensive ítems and get defensive stats as a colateral effect, because they want to be a tank wiithout buying a single defensive ítem. This is bad for the balance, don't encourage people to learn how to play in a safe way and positionate well, and basically rewards AD players for complaining about everything instead of playing better or accept that some ofensive builds have more risk.
This is a bad decision.
The AD itemization is becoming retarded while AP has a serious lack of options, by the way.