How an N3 might have fought in the Mediterranean

What useful Second World War role could the 23-knot N3 battleship have filled?

Not carrier scouting, but it could have anchored a battle squadron and been especially dangerous in the Mediterranean.

At roughly 23 knots, the slow, heavily armed N3 design would have been unsuitable for fast carrier work. It could still have anchored a conventional battle squadron. Its massive protection would have made surface opponents reluctant to engage it directly. In the confined Mediterranean, that armour and firepower could have supported especially aggressive operations, including a hypothetical close bombardment of Taranto.