Forwards win games. The backs decide by how much.
That really does seem to be the most blindingly obvious way to clean up both the ptb and observance of the 10 metres so it's a mystery to me why (so far as I recall) it has never been tried. But even the Aussies preferred to experiment with a second ref, rather than trust the touchies.
That makes me think there must be some technical reason for the reluctance, but I can't for the life of me think what it is. Do any of our more technically knowledgable posters (esp. those with experience of reffing) know what it is? (Or would care to hazard a guess?)
I think they concentrate more on the ruck maul and the resulting PTB looking for infringements when its about 15 metres from the touch line. Its the ref who sets the 10 metres and although the ref and touch judge are wired up maybe they are not in synch when the ref tells to play. Also the ref allows a bit of tolerance of around a metre to let the game flow, if the touch judge play a stricter off side we would probably have an off side in every set loads of penalties and a stop start game.
It certainly would be a nightmare for a few games but, as RM suggested above, there is no reason to assume that it wouldn't settle down to the benefit of the game if the RFL stuck with it. (Though they don't have a very good record on that)
(And it seems a bit nonsensical (to me) to worry about giving the refs help policing the ruck 15 m from the touchlines but no help further infield!)
For the benefit of the game the clubs and players need to buy into the idea, and unless ALL clubs did so it is unlikely to work, I suspect. But it must be worth a try, as it is pretty obvious from this thread that we are all fed up with players coming up early and denying the attacking side space to play an attractive brand of the game.
That's the most rational explanation I've heard so far, but there would be linesman at both sides of the pitch and I don't see why it would be too difficult for a player to glance to each side to make sure they are in line with both. And of course once one or two players are in position they all become a reference point for each other. And it shouldn't then be too difficult for the touchies to see if anyone is in front of the 'line' the two of them make across the pitch.
So, on balance, I'm still awaiting a convincing explanation!
One linesman would be on the line of the ball monitoring for forward passes so generally will only be one linesman on one side. Each ptb is about 6-8 seconds so for the set line to navigate all the way across the pitch in that time (bearing in mind 3 or 4 seconds will be retreating 10m) it'd be pretty chaotic.