Sucking the whole emotion out of the game for supporters at live games. I suppose for the armchair fan with access to all the angles and in depth analysis there is something to watch and listen too but as a fan at the stadium it already has the stop start feel of an NFL gameVAR - probably the nail in the coffin for me and watching football. Whether the end result is right or wrong it removes the joy and excitement and everything that's good about football. That applies when it's for or against your team - let's all wait 5 minutes before reacting emotionally to a game that used to be full of emotion.