In agreement with most of your OP HI but if I could only choose one it would have to be:-
“Finally, stop worrying about how other teams are setting up, find your own system and style of play and STICK to it.”
We have NL players for a reason, they are limited in their ability and that ability needs to be maximised. “Be the best you can be” – NA every week) Get them comfortable with one system and in their correct position.