Trading VLS cells for trainable missile launchers

How many VLS cells should a ship trade for old-style trainable missile launchers?

Preferably no more than 16 of 96, with 24 the upper limit if the alternate launcher adds enough capacity and reload flexibility.

The preferred trade sacrifices only sixteen cells from a 96-cell VLS battery, with twenty-four as the upper limit. Any trainable launcher must return enough missile capacity or operational flexibility to justify that loss. The mixed sketch retains sixty-four forward cells, places smaller cell banks beside a raised launcher, and avoids abandoning vertical launch. The attraction of the older arrangement is a magazine that might be replenished at sea, something VLS makes difficult. The answer weighs total load, deck geometry, and rearming rather than nostalgia for trainable launchers.