Yeah, there's always risk in rugby league, though. I think the Simonson one is just a freak accident.
To me so much of the game could be fixed by buffing the judiciary and reducing the sin bins. Punish foul play after the game, unless it's reckless/intentional. If you then want to use injuries to weight decisions at least you can do it with some extra information, rather than in the heat of the game (I still think it shouldn't be a factor).
As for this ruling, I'd be fine with the ref being able to make a decision as to whether the player is genuinely competing for the ball, with a few potential makers of eyes for the ball and timing of the jump/contact. I think that's simple enough that you can get most decisions right with common sense. In almost all of these situations, if it walks like a duck and quacks like a duck...... If in doubt, you go in favour of the attacking team. There should be an emphasis on allowing the players to compete for the ball.
I thought HB was saying charge downs still not a knock on but also not 6 again, making them more attractive as it would still be last tackle.