I have some questions about. It's got a reputation in our media as being a bit of a dud.
Q: Is this deserved?
A: I've read it had some teething problems to begin with, but these were largely sorted out.
The current government (at least until a couple of weeks ago) wants to replace them with subs which might be foreign built.
Q: Why is this necessary? Why can't we build from the experienced gained from the Collin's?
A: I'm sure the Swedes (who provided the basic design) would help for the right price.
We need to be able to build or buy stuff which suits our requirements, rather than just buying off the shelf.
(Statement) The F-35 is a perfect example. It doesn't have the range needed for our massive country, with most of its air bases a long way south of where combat could occur.
(Answer) They'll need to refuel in flight.
(Operationally incorrect statement) where the tankers could be vulnerable to attack.
If only we could buy from the Russians....
That's not to say American planes are crap, they're just built for American needs, not ours. (Typically the Australian needs in the WestPac are strikingly similar to Austrlain needs...but more on that later)
The Collins have developed into good boats. One of the biggest problems Australia has had recently is effectively manning them all.
Other than that, as I point out above, you answered most of your own questions.
As to the Australians buying Russian aircraft and equipment...seriously? I am absolutely sure that that is simply not going to happen in my life time.
Australia has a strong alliance with the US. The needs of the US in the WestPac are strikingly similar to those of Australia...which are the precise tow reasons Australia often (but not all the time) works with the US.
There is significant history in that relationship and strong reasons for it. The current economic crisis would be both a shortsighted reason, and inappropriate reason to walk away from them.
As to fueling...refueling for such is done well behind any contested air space...and the refueling aircraft in any war time scenario would also be protected.
Fact is...outside of long range MPAs, long-range recon, or bombers, you cannot have enough fuel to effectively operate in most large reaches of western Pacifc...so re-fueling is pretty much a given anyway.