The TMO
I think its about time WR looked at removing this business where the referee looks at the replay on the in-ground screen and then gets into a protracted discussion with the other match officials. They should take a leaf from the NRL's book... the referee makes a provisional decision, try or no try, then if he calls in the TMO, it becomes the TMO's decision alone. The TMO can only overturn the on-field decision of he can find clear and obvious evidence that its wrong. If its 50/50, the TMO stays with the on-field decision.