i'm just wondering if the navy would even consider F-35Bs with their pilot shortage being as it is, adding as been said, 8-10 per ship, thats nearly 20 pilots, with trainers, replacements, rotation, it would be hard to make do along with the RAAF getting the F-35A, and the RAAF would most likely get first pick at any new pilots to fill their pool. Its not the interest or recruitment thats a problem, its finding the recruits who can make it from start to finish of training. Then we come back to a shortage of qualified people who can launch these aircraft of the deck.
There is also the problem of Aircraft taking up room that would be used for deployment, taking a full ship with aircraft that may not be used, along with the F-35B own supplies, would be taking room that could be of better benefit with more helos be they NH-90 or tiger, it would make a difference in deployment sense.
If the Navantia was already built, and ADF could review the use of STOVL aircraft in use by the Spanish, it may have had some weigh in on their decision, but it will not be commisioned until the expected start of construction on Nuship Canberra. by then, a change in design would mean cost blowout, and RAN would like to limit them as much as possible at the moment.