Two things come to mind seeing some posts here;
1: Adding voice chat with the option to turn it off is the most obvious thing they could have done, if the most simple players of this title are too dense to mute it in the options; they're likely way too simple to play the game the way it's meant to be played and enjoy the competitive element of its online play.
2: Voice chat does not impact the performance of the title; the processing power needed for the future and the required bandwidth are beyond miniscule. There is absolutely no way it would affect performance in any sort of manner.







