I like to look at the current battle system allot like the legend of zelda+ system. Think about all that time your battling with Link pressing the A button, and if you stop to type something to someone to form some kind of strategy, you would get beaten to death(not that there is a keyboard in zelda, but as an example). Because of that factor, zelda could never have a communication system, AND have a battle system filled with only pressing the A button. The 2 variables, communication, and slash and bash spamming, can not work in the same equation. There for, we now must have AA, or some other form system that can still perform functionality amongst 2 most important features in a battle system.