The shot clock works pretty well in the NRL. It should minimise some forms of gamesmanship at drop outs.
Some of the teams with bigger packs will struggle with the scrum clock. Their whole game plan for the last few years revolved around a good minutes rest before defending a set.
It is the right move. We need to clean up the things that have crept into the sport over the last few years.
There are a couple more things that could do with cleaning up and that is a dummy half passing straight into a defender behind the PTB and defenders running into a lead runner effectively creating an obstruction in a try scoring opportunity.
If a defender is behind the PTB but is doing all he can to not interfere and then the dummy half doesnt make an attempt to play around him i think the penalty should go against the dummy half. That should stop it dead in its tracks.
The obstruction would be more difficult to police.