Would be really great if the guy using a "game master" slot, hosting or not the game, could be able to create units/groups of units with waypoint and tasks before throwing them in the game while the game is live.
So the real game master could create missions and objectives live for the pilotes, depending on which planes are airborne.
Maybe have some kind of "online" mission editor to prepare the groups and when everything is ready, a button to activate the new units.