I don't get why they can't decide there and then. I mean we expect a ref to make a split second decision, why can't we have video refs doing things there and then?
As fans, you want to see the right decision made don't you? If it's a decision about a goal then you go live to the video ref who can decide whilst play is paused. I suspect most of that could occur in the time usually taken complaining to the ref anyway.
If it's an off the ball type incident that the ref missed, the video ref could look it over and if he thinks something needs doing, he lets the ref know and at the next break in play, it's dealt with. That's not really any different to playing the advantage rule at the moment, where a ref will go back and book a player after the advantage has ended.
Just seems football tries to make half arsed work arounds that do little but over complicate matters.