Jean,
Third person give the player the widest perspective in the Tactical sense. As developments on the battlefield occur, you are able to adjust your view, or even glance to see if your fleet mate is in trouble or to sight a crippled enemy.
The Single viewer that BC has, or even the 3rd person view does not give a wide view of the battlefield. STO provides the widest view that I have seen.
If you can switch between view, that would accommodate all player choices and types.
Great question.