Hello, I’m here to share an idea. 
It’s worth noting that the game is difficult to balance. I think the best thing for you would be to let players balance their games by adding sliders.
Several possible cursors, some examples:
- % ruck
- % injury
- % counter ruck
- % forward
- % offside
- % offload
- % high tackle
- % straight throws into touch
% jeux au pieds IA
%drops IA
%collapsed melee
......ETC.....
This takes away your work, each player plays his game as he sees fit 