But red's entitled to play that ball because it is not out of play, and besides which, the referee might not have seen the knock on. Also, in the case you mention, there isn't specific Law that would require the red player to give up the ball to the blue player.
But is the ball dead? We seem to suggest that it Is more of a 'zombie ball' than a dead ball...that is it still is in play by the mere fact they can play on quickly (and why offside players advancing can still be penalised!). Therefore until the QTI is not on, the ball is still somewhat 'live' and 'in play'
This is along way different from a player intentionally running after a ball he is not entitled to play anyway, and kicking it or touching it to prevent a QTI. I see no reason why the restrictions on what can be done by the player who took the ball into touch, should not also apply to his team-mates, but the easier path would be to go the Aussie NRC way, and just remove or alter the touch clause.
That's your interpretation of the law, others are saying that the law can be interpreted differently. You're the one now drawing that the extension that what applied to the ball carrier into touch should apply to others. But that's not what is written. If that's the intent then why isn't it worded as such. They've had enough years to fix it now? You've said it yourself that unless it's written in the laws that it's not allowed, then it should be permitted. This is one of those. The law says that IF it is touched another player the QTI is not permitted, it doesn't say that anyone that does touch it must be sanctioned? You seem to be drawing an extension not backed up in law. I do agree with you that the NRC approach clears it up - and is a sensible way to go
There are two things in the Law book that aren't Laws are often forgotten about...
Spirit
Rugby owes much of its appeal to the fact that it is played both to the letter and within the Spirit of the Laws. The responsibility for ensuring that this happens lies not with one individual - it involves coaches, captains, players and referees.
Integrity is central to the fabric of the Game and is generated through honesty & fair play[/
Even at the Elite level, I consider the above two statements to be an important part of the professionalism of the players. Running after the ball with the express purpose of spoiling a quick throw in doesn't seem to me to sit well with the spirit of the way the game is played.