The NRL should be and highly likely are considering adjusting the 40/20 rule to 40/30. This would be a great change (there were only 30 successful 40/20 in 2017). Once they have considered it they should implement it post haste. 40/20 is not enough of a threat to the defence. If they change it to 40/30 a lot more will be attempted earlier in the set of possession and more will be successful. Therefore the defence will need to make a decision if they want to drop the wingers back earlier in the set than they presently do. This will open up space laterally and result in more passing of the ball through the back line. Forcing the defence into having to make different decisions and creating more attacking threats will see the game soar.