many people said they want auto attack so they can talk more in battle, they feel like if they stop to do anything they are lowering there dmg. This of course is an illussion, because with the stamina system as long as you dont go to 100% nothing is wasted.
Thing is konnichiwa, they said that auto attack was more than just adding auto attack, they implied that without auto attack, the new battle system wouldnt function properly, this implies that not auto attacking will not allow you to be efficient in battle. So, people are basically bracing for a new, very different battle system, because our battle system right now is nothing like that.