The Guards

The Guards, they would be added along side the warden and act as a caretaker, or an additional protector of the deep dark forests, (suggesting Minecraft will add trees in the deep dark). They would not be blind, but deaf, and they would only attack you if you are in their line of sight, meaning you have to be in front of their eyes for them to become hostile. They are somewhat like witches, and they attack using lingering potions. And maybe they would be protectors of a structure in the deep dark, or they may just want to protect the deep dark from outsiders!