EM mentions the Salford v Wigan game as over use of the VR.
I do tend to agree with him.
The obstuctions I've no issue with as if the tech is there use it and they are very difficult to see first time.
What got me in that game was the VR being used for the Bateman try as the ref was in line when Smith kicked the ball for the last time before Bateman touched down.
Also the Hock no try. His ball carrying arm hit the ground twice before he got over the line.
The Powell try, from the TV it was clear Williams didn't knock on as the ball hit his boot.
Then the Burgess try, was he in touch? He was over a metre in play.
On those four incidents the ref and TJ's should have been able to award or disallow as appropriate as they were so obvious.
If they had decided on those four try/no try then the other referrals would have been on the obstuction calls which would have been a different matter.