never played call of duty but i like the sound of being able to command the ai. i like the system from freedom fighters where u just tell them go, follow, hold position. its really simple and works. but that means the ai created must be good. it be nice for multiplayer only if the power is given to one person that commands a squad. maybe split each team into smaller squads with a squad leader so the squad leaders can have go command over their unit and then all the squad leaders can coordinate together assigning tasks to each squad.
do or do not there is no try - yoda