Scrap the option for a team to ground the ball in their own in-goal area. Simple no?

It would be an exceptionally poor kick, because if done on purpose, the kicker would have to be an idiot who didn't know the rule that if it was caught in goal, he wouldn't be "trapping" the defence in goal, he would be giving them a 20m tap.

Currently, yes. What I am saying is that such an accurate kick and chase should be rewarded.

Any half decent kicker could kick the ball to land in goal, especially when only less than 20m out. Defenders will never get the ball back until attackers make a mistake. Stupid idea.

There are other rules out there which are much worse that need sorting.
For example, "dragging" people into touch. If they're not held (ball carrying arm hitting the floor or momentum stopped) this should be allowed to reward good defence.
Voluntary tackle, does this still exist?
Defenders dropping out taking an age to get the ball back in play. The benefit is neutralised to attackers it takes that long! You have one minute to get the ball back in play, otherwise 10m penalty under the sticks.
Corner flag. Get it back in play. Great skill by attackers bending round the post to ground the ball. Ryan Hall's try vs Aus at Wembley just one example.
A passed ball hitting a defenders arm when he's committed in the tackle and makes no genuine play at it but it's classed as a knock-on. This one is really frustrating as a supporter on the terraces.

There's probably more as well which should be much higher on the priority list of Mr Cummins to sort.

The clock always gets stopped pretty much instantly when a team is chasing the game and forces a drop out, which makes it even more of a farce, it should be 1 minute and then stopped, like kicks at goal.

Kicks in goal are fine as they are, if the player carrying the ball out slips then they deserve to be punished.

The one that really bugs me is when a team tries to take a quick tap from a 20 meter restart with most of the team in front of them, that should be a penalty against them for offside IMO.

Another one is a player getting up after being tackled and playing on, that should just be a play the ball not penalty like it is for offloading after the tackle.

I agree with most bar from the last, the last game I played in was a couple of years ago before the ruling about aplaying the ball if held. I always wriggled and off loaded most of the time, I got penalised for not hearing the ref which is bloody difficult with your head in someone elses stomach the perople trying to tackle you shouting breathing, I should imagine that it would be worse in a profesional match with the crowd as well. I got penalised for off loading the ball, yet I felt I didn't stop or was held up.