Don't add a team that doesn't have equal star rating. Kick them out if they are to strong or too weak. Too strong we will drew into a strong association that we doesn't have a chance to compete. One more thing just unfriend those team or his friends that have many 6 or 7 star player, they will make you groupted with a strong opponent and have monetary advantages that no problem to buy token because their money value is higher than us. For example Euro value is higher than Rupiah. You can buy more with Euro than Rupiah.