Six of one, half a dozen of the other...
Yes, you are missing something. You shouldn't be, because I have gone over it several times - see my post #65.
Again:
If a patient has to get from a non-major centre in the Kimberley to Perth, they will first have to be retrieved by the PC-12, then taken to a major centre from where the jet can operate. The time taken to get them to Perth will end up being about the same, irrespective of where the jet is based. This is the patient's point of view.
If the patient has to come from one of the major centres, then the time frame is not usually critical, as, in this case, the flight is merely a hospital-to-hospital transfer - not an "emergency evacuation".
So, what are the key differences between the Jandakot and Broome basing, given that the patient sees no change in the time taken to get him to his hospital?
1. The time to do a transfer is 2.5 hours longer when the jet is based in Broome (the idea of jets is to
save time);
2. The taxpayer shells out a million dollars more, per year, to have a jet in Broome.