What HMS Vanguard could have contributed in the Falklands

Which retired ship would have been most useful to reactivate for the 1982 Falklands War?

HMS Vanguard's dense 40 mm battery and fifteen-inch guns could have added local air defense and far-reaching naval gunfire support around San Carlos.

Vanguard is imagined with the amphibious force, using her many Bofors guns against low-level attackers and her main battery against Argentine positions ashore. That support could free some Harrier effort from ground attack for air defense, although the scenario assumes the ship, crew, and logistics could be restored. The value lies in matching weapons to campaign tasks rather than simply admiring a battleship's size.