Disagree. Most of the issues with video review center around whether or not the puck "fully crossed the goal line." This completely eliminates that issue, as even if 1 millimeter of the puck is across the line, it's a goal. Also, if the puck is hidden from view, either by a body or glove, it is easier to determine whether or not any portion of the puck is over the line rather than is the ENTIRE puck over the line, which is the cause of most of the consternation today.
Is it totally foolproof? Of course not. But it's certainly a hell of alot better than what they have today, and better IMO than adding another line that they can argue over.