Even with all this passive aoe - bonuses to officers and supports, people will not happly fall in orderly line, just hide in cover (like in buildings/fences/rocks) and old good shoot and hide continue with even more comfort.
Something more "directional" and "interactive", so to say, needed. To use for action (attack), not defence.
Like officers have limited (cooldown) charge! command, that for like 30 sec gives wide aoe with at least running speed bonus, may be more.