I suppose as DLS says, the intention could also be that they help in penalty/simulation decisions, but again, it's still down to an interpretation of the event in real time.
Either they should stick with the current system, or go all out and allow video refereeing in certain situations. Now I'm not saying they should do that, just that they should choose to either trust in the ref, or take it out of his hands.
Too many cooks, and all that.
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