Presuming the OP is not on a wind up. I would like to see tries from kicks to be reduced to 2 points in junior or development competitions as at the moment a kick to the corner is a far to familiar tactic. But in the profesional or open age group keep it at 4 points.

I agree as long as all your team are behind the ball play it where you like. The other proviso for me is that the tap restart & tap penalty should be as it was in the 1960's you placed the ball on the floor played it forward with your foot then picked it up & played on, it makes it a skill & a risk so making it a judjment call as you are risking a knock on & loosing the ball.

Ok as it stands if the ball goes dead, everyone as to be set, the offence/defence/referee/TJ.

I think they should bin that, as soon as that ball reaches the 20 line and is tapped that player regardless of anything should be deemed to be able to play on, if the defence is offside when they try to affect a tackle then that's a penalty. Any of the offence that was offside at the tap should be deemed offside until the first tackle is made.

The defence dont have to be set, just the offence. It is a controlled restart so the Ref makes the decision to allow play to start but as long as the offence are set the play should start. If the defence are offside at this point it is a penalty. But refs should let play restart as long as he is ready and the offence is ready.

Okay, fine keep conversions and the number of points for tries from kicks the same as tries from passing plays.

But interchanges should be reduced to 8, and the number on the bench to three, teams more and more are putting 4 forwards on the bench; IMO there should be a law whereby only 2 recognised front row forwards are allowed on the bench.

It's not rugby union. We don't have recognised front row forwards. We have players who often play in one position. There are players who are on the borderline of positions. What if a club brings on a second rower but plays him at prop? Plenty of second rowers have spells of effectively doing props work. Unenforceable without significantly changing the game and is unnecessary.
Same goes for 8 interchanges from 3 players. All this will encourage is less diversity in players and more focus on fitness and percentages etc. No space for a Feka type prop or a Burrow type half on the bench.

10 from 4 is about right. If we want more game breaking players on the bench then reducing the opportunity to have one on the bench isn't going to help. We also (NRL included) need to start producing some more.