I think the conversation shouldn’t be having league players come across now, by the time they are 23-24 it’s far too late. They would have built so many instinctive aspects in their professional training designed for league, it would be extremely hard to unlearn and then learn instinctive habits for union after this. The conversation needs to be able making sure the Nathan cleary’s of the world don’t make it to league pro systems in the first place. There is so many guys if identified at 16-17 that could have been amazing union players and learn the skills then. This includes tight 5 and back row players. Someone like Josh Papalii, on a union training program would be 130kgs and built like a fridge, instead he’s 115-120kg. Same with someone like Lindsay Collins would make a good 6 and be a 115kg no nonsense work horse. But they all greared and have specialized in a different game. Same with union guys, Itoje, Etzebeth, Tupou, etc would struggle to make an NRL side
As for locks, we already have plenty, we just can’t retain any of them or attract them to play for us because the sport is highly unsuccessful here and cannot afford them or provide the correct opportunities for them. The age profile of the current world champs is pretty old, similar ages in some cases to Adam Coleman, Arnold brothers, Skelton, Kane Douglas, Simmons, etc. if they were all back in Aus, some guys in the current squad might not even start at the Super Rugby team.