New Zealand's win over Sri Lanka in Dunedin on Monday reinforced calls for fine-tuning, most particularly in the information the third official is entitled to seek. There was the ludicrous situation of DRS operators knowing the result of a referred call by players, but not being able to advise the third official, with whom they are forbidden from conversing during a day's play. And while it would be logical to allow the third umpire that verbal assistance, the ICC have ruled it out.
The ICC's head of media and communications Sami Ul Hasan said it would not be practical for third umpires to communicate with those running the technology.
He rejected the idea of DRS operators being accredited and sitting in the same room as the third official. The effect is the third officials are hamstrung in having all available information at their disposal.
At one point, when New Zealand batsman Tom Latham was awaiting an lbw verdict on 97, the operators could see a feed which clearly showed he had hit the ball.
However, it was one they weren't able to show third umpire Paul Reiffel because it was outside ICC protocols.
There were five referrals to the third umpire on the final morning in Dunedin. On every occasion, replays supported the decision.
The most intriguing was the third, from a delivery by left-armer Neil Wagner, which struck batsman Milinda Siriwardana on the full, on his back leg. It appeared plumb and umpire Llong gave the batsman out but a referral showed the ball passing the off stump by a slim margin. There was a moment of confusion on the replay, with the ball appearing to strike the pad in line with the stumps.
However, on closer inspection it was a dark mark of a logo on the pad, which was in line with the stumps. The ball was fractionally to the right and Siriwardana survived.
The hope is the MIT testing will further improve the system and make it more user friendly, at least for the third umpire.