I still fail to see how the powers that be have come to the conclusion that less interchange will discourage game slowing tactics.
If anything, this is only going to further increase holding down and wrestling tactics as teams desperately try to control the speed of the ruck to improve their forwards' endurance. Although really most teams only use 8 interchanges as it is on forward rotation and another 2 on rotating the hooker/utility, so really IMO the major change that we'll actually see from this is the development of more 80 minute hookers as opposed to more lean, speedy forwards.
Don't get me wrong, I actually like the change as I think having an 80 minute hooker is not rewarded well enough at the moment, but surely if the aim is to reduce the wrestle they should look at actually targeting the f**king wrestle directly than by trying these roundabout tactics.