1. Instead of 4 try bonus point, winning team is awarded a bonus point for finishing 3 or more tries ahead of their opponents
Yup, works well in France, why not. Gives a team incentive to keep scoring tries and at the business end of a season bonus points often come into play in league positions.
2. Reduced time limits for conversions and penalty kick attempts
haven't we recently set clear limits, is that not working well?
3. After a successful or unsuccessful penalty goal attempt, play is restarted with a scrum to the non-kicking team at the place of the penalty
If we agree that scrums are a mess in the elite game, why bring in more scrums? I'd be happy with the defending team having a free kick, which would be a more suitable transfer of possession for a failed kick.
4. Time limit for both teams to form a scrum
How much? In principle not against it
5. No option to kick for goal from a scrum penalty (kick to touch allowed). If penalty becomes a ‘repeated infringement’ then kick at goal is allowed.
Too complicated and don't see the reasoning, a no from me.
6. Scrum-half of non-feeding team is compulsory, must stay within 1m of the scrum, and cannot move past the mid-line of the scrum
Again, more needless complications. I'm happy with the status quo of the ball being the opposing scrum half's offside line
7. If a yellow card is given for repeated team infringement (excluding dangerous play), the non-offending captain chooses the opposition player who is temporarily suspended for 10 mins
No, no and no. Keep as is.
8. Players arriving through the gate may ‘drive out’ opponents past the ruck, creating more space behind the ruck for attack
I have to say I'd like to get a check on what is intended with this sentence. Does it mean opponents not physically in the ruck, but in a pillar position for example, are now fair game?
9. If non-throwing team does not contest for the ball, the straightness of the throw is not considered
Don't like it, keep as is. The choice not to contest the ball in the air is only taken when the opposition choose to contest the immediate drive. Either way, a lineout should remain a fair contest for the ball.
10. A ‘mark’ can be awarded any place on the field
No, keep as is. Last gap defensive option, let's keep open play as open as possible please, fewer set pieces!
11. After half-time and full-time, if awarded a Penalty Kick, you can kick to touch and play the lineout
To squeeze in a few extra viewing moments? Without wishing to sound like a NIMBY, no I don't see the point in this
12. Free Kick for kick-off infringements as per Sevens
Yup sounds good to me