I'm not advocating "offensive" and "defensive" coordinators.
I'm suggesting perhaps that a club could consider three coaches, of equal ability (not necessarily specialists), working with kids in smaller groups.
Example: Coach Wren takes 4 forwards and works on shooting while Coach Savitz takes 6 midfielders and plays 4v2 keep-away in a tight space while Coach Tisdale takes 6 defenders and works on directional defensive heading out of pressure.
All of this happens for 30 minutes, at the same time, during the same session. I understand (Old Gal) that this is just not practical in the framework of club soccer.