I concur from my readings that the c&c will just allow you more precise control of your npc wings and or player fleet.
I.e magnet maybe able to direct us visually on our huds with which targets to attack as he will have a broader battlefield overview. Versus him saying over ts3 Hey get this hornet off me hed actually light it up on our displays.
Also i think he gets more detailed info on more ships as it has a bigger scanner array. So he could pinpoint enemies with shields down etc. there goal seems to be to give us what you picture from any movie of a command ship. Whether it is a hologram of the battlefield (which im leaning towards since they have something similar in the hangar with the inventory thing). Or a clear electronic display with tactical info.