absorbing various different fighter types, all of which would need their associated training, logistics support, etc.
They are already juggling the logistics support from variuos tank and APC models, and Surface to air systems, artillery of varying kinds.
Helicopters are even more "logistics tail" intensive then jets ... they have more parts. I can see how the decision in Australia to sell off the spares eligible parts (harvesting them) and striking them from the record is a sensible approach to their transition to the Blackhawk.