This is minor, but it might be helpful in mission coordinating if the planner could go over assignments and responsibilities without being interupted. The way I see it, the mission planner would have the ability to speak over the radio and all other incoming transmissions would be negated as long as the leader was pressing "T". Most of the time people show good courtesy over the radio, but sometimes ongoing chatter unrelated to the mission can leave a planner frustrated and exasperated in finding an opening to give orders.