Taunting commentary: The announcers will start taunting your pitcher if you remain idle while pitching.
Dominating team: At the Main menu of Fanchise mode go to GM Office and Roster Management. Select Player Editor and find your franchise team using the Left analog stick. Once you have found your team you will be shown a list of the players on it. You will be able to scroll down to any player and edit their attributes to make them better. If you do this to all of your players you will have a team that will dominate the league.