Beyond requring basic health care services, it gives the administrator the ability to design and implement a structure of enrollee cost-sharing due a managed health care system from subsidized, nonsubsidized, and health coverage tax credit eligible enrollees. The structure shall discourage inappropriate enrollee utilization of health care services, and may utilize copayments, deductibles, and other cost-sharing mechanisms, but shall not be so costly to enrollees as to constitute a barrier to appropriate utilization of necessary health care services.