In all sports, I want a video referee that is watching every minute and angle. Coaches can challenge a live call X number of times during the game. Field refs can ask for a review at any point.
The video ref (in another room) makes the call in <30 seconds through an earpiece to the field refs. Quick, simple, and better than the current system.
In the last two minutes, the video ref can call in and overturn any call that is obviously missed by the live refs.
Too much Big Brother.
Having a video person assist and speed up calls is in the right direction. But having refs call for a review at any point or the video ref overturning calls at his discretion is way too much.