I am of this opinion: Once it is agreed too, then there is little said that would or can make a difference or change anything. Worst if it has failed before, one begs the question why persist with it, or bring it back again. Sometimes I believe that it is a bit of politics in the game, not on the field, but in the administration of it, by that I mean, should this be taken seriously, would we be seeing an overhaul of current equipment and replacement with newer ones, or additional equipment, personnel etc... and at whet cost and to who, or is it that the ICC find that the Third Umpire is not doing enough for his pay and wants to create some additional responsibilities for him?
That said, I have one question, are we going to see test matches over limit change from 90 to say 85, or 80 overs to accommodate this process that could be time consuming or is there a time limit set for which the Third Umpire must come back with a decision?