I thought there was both good and bad examples of video-ref use in the Dragons-Raiders game:
Example 1 (Good) - Morris no try. As a Dragons fan, I disagree with the ruling/rule itself, but as a Rugby League fan, it had to be made due to consistency. Was originally called a try, then the video ref went back to check the 'obstruction', saw that it was the same as the Cronk no-try, and made the call fairly quickly. Tick to the video refs.
Example 2 (Bad) - Robinson try. Video ref called it a no-try based on tackled-without-the-ball, the video ref spent forever analysing it before overturning the decision on an assumption/50-50 call. The reason this rule was brought in was to eliminate the benefit-of-the-doubt, yet the videos refs seemed stuck in 2012 with this call.
Example 3 (Good) - Vidot? no try. Ref made a call that there was a knock-on by Vidot, and the video didnt have an angle that didnt show beyond a doubt that he did or didnt touch it. Thus, it gets referred to the original decision very quickly. Well done refs - perfect example of how the Kieran Foran incident should have been handled in last years semis.