Altering the circumstances under which a court may appoint a guardian of the person of a minor if the court finds, by a preponderance of the evidence that the appointment is in the best interests of the minor, no testamentary appointment has been made, no parent is willing or able to serve as the minor's guardian, each parent consents to the appointment, or no parent files an objection to the appointment; and providing that the appointment of a guardian of the person of a minor does not require the termination of parental rights.