What is the point of having players that can not play in your team. They should be able to earn chemistry points per game played. Packed players will have that 1 point advantage. If used properly, they would only need 6 games before they reached ten individual chem.
What if all players had to earn chem. You could take them on some single player tournaments (Like training matches) or online single matches. Or just take them straight online and watch them gel after a few games.
This way we could build different teams and come up against some interesting combinations.
Just my opinion.