Here's a question: 20 collars and 10 ARTS small craft bays. What mix of DropShips and small craft would you take with this beast? Remember that it still has 60 fighters onboard. The text suggests that eight Aesir, three Aqueduct, and three Mammoth DropShips will be a standard complement, but that leaves a half-dozen collars and the craft bays open.
...by the way, eight Aesirs would give the Leviathan III 300 fighters, nearly a Galaxy of just aerospace fighters. I suspect this behemoth is meant, at least partially, as a Castrum-killer.