One of the staff members, MrConservitve prefered the PC-24 rough field landings over the KingAir. Would open up a number of previously inaccessible airstrips, privately owned ones. Would be essential for same day deliveries/uber in support of Army.
Pilatus PC24
Payload: Max payload: 1,406 kg
Cruise speed: 810 km/h (510 mph, 440 kn)
Range: 3,700 km (2,300 mi, 2,000 nmi) , 6 passengers (1,200 lb payload)
en.wikipedia.org
Spartan
Payload: source says 5000 kgs but I've seen higher.
Speed: 670km
Range: 1700km at maximum take off weight
I have it under good authority that RAAF strategic airlift is satisfied with a mix of whitetail, C-130J and CH-47.
Not sure if ARMY will be into HADR air missions or tactical lift. Arguably they'd drive there or hop on a ferry.
Pilatus PC24 as medical evacuation and pre positioning drone teams for example, surveillance or drone repairs domestically and across water.
But yeah. Different reasons.