6 again is good in principle but is often exploited.

Example, earlier in the season Saints used to often deliberately hold down on the first tackle for a team bringing the ball out of their 22. Bought Saints time to get their defensive line in order - worth it for the sake of one extra tackle. Not worth it if it a penalty is given instead.

Possible solution. Offence committed by defending side in opposition's 20 (40?), then it's a penalty rather than 6 again.

Totally agree.

Sadly I'm not convinced there's anyone at the RFL with the vision to implement it.

This is essentially the way the six again currently works in the NRL so I expect this modification will appear here next year.

I think this is spot on, as a saints fan I'd have to agree we did and still do it a lot. And I thought they'd brought in a rule change to counter this, like you're suggesting.