Please add a feature that lets a player point their hand in the direction of a person to whom they want to listen more closely. This should apply some audio effects to very slightly lower the voices of people outside the direction being pointed.
Ideally this would be an option in the expresso menu so that it was not always on, but easy to access. Alternatively, it could be a more automatic system, where pointing your head in the direction of the person for a short threshold period (~3s) automatically applied the audio effect.