I don’t know where you get your info but its clearly all wrong.
The Super Hornet is one of the best dogfighters in the world with unmatched high alpha capability and nose authority. Combined with a proven off bore sight missile capability with HMDs and AIM-9X. Which aircraft in the SEA theatre can match it? Overweight F-16s? Lightweight F-16s with 1970s Sidewinders? MiG-29s that the regular Hornets have basically bested in training at a ratio of X wins to 0 losses? Su-27s that the pilots aren’t fully qualified on? The only fighters that could give them a go are RSAF F-5s and F-15s and the VNAF Su-27s.
The Super Hornet can put precise ordnance on the same targets as the F-111. As to the radius of action the F-111 is fundamentally limited to the range of its air to air escort when up against a threat that includes look-down-shoot-down radar equipped fighters. Since any pre 2010 RAAF alone strike package would be made up of un IFR F-111s and IFRed F/A-18As the radius of action would be limited to about ~640 NM, of which 40 NM is the stand off flight of Popeye bomb. The Super Hornet flying by itself and using IFR can reach a bit further or ~660 NM thanks to longer standoff range of its JSOW bomb which defrays the slightly lower range of a Super Hornet carrying bombs compared to a regular Hornet carrying only ATA missiles.
It’s the cheapest fighter in production in the west at the moment which is rated by experts at about 60% of the combat capability of a F-35 and about 2-3 times the combat capability of a classic Hornet.
A handful of techs all of which were needed on more important projects like putting together the Boeing Wedgetail AEW&C aircraft. No one who worked on the F-111 is starving without a job these days, there is more need for aerospace workers than Australia has at the moment and for some time into the future.
That is odd considering the aircraft hardly even made it through to 2010. Launch abort rates of 50% were not uncommon during the 2000s decade. While the airframe could be kept from falling apart all the little widgets that the thing work could not. It was old technology, for old capability that just wasn’t worth it.
The RAAF is far more capable with the Super Hornet than with the F-111. The only bad thing about this modernisation is why didn’t it happen 10 years ago.
Well, I guess the trouble was more on the last statement. The SH's superiority lies in it's great assortment of sensors with the topnotch AESA radar as the crowning glory. On logistics part, Australia has dedicated air refueling augmented by SH buddy storing, EW capabilities with Growlers and AE&C capability and other land and sea-based assets (which are superior to their counterparts). As a staunch American ally, Australia will have information superiority. They have better trained pilots.
I guess the reality of things now is that any SEA country would be crazy to attack Australia. They'd be going in an asymmetrical war with Australia, get all their jets blasted BVR, their whole navy sunk by a lone AUS sub (exaggerated a little). Then suffer the wrath of the entire US-led bloc (among them other SEA nations). My only concern is that the advantages Australia has today might not last this decade. Indonesia is getting cash-rich with its booming economy and huge industrialization. Who knows, tomorrow they might align with China and order J-20s. And even right now, they could decide to modernize their armed forces. What happens if Indonesia is able to field half a century of advanced Su-35 (Su-47?) Super Flankers 10 years from now with all the stable logistics? What if they procure tech that gives them fog of war and active defense capabilities, all the while the F-35 proves to be a big time failure? What if America decides to enforce an isolation policy on itself? In short, what if the odds balance or even turn against Australia? And it's not just Indonesia. China might have a half-dozen aircraft carriers in a decade or so. Maybe India too.
I believe Australia having a dominant air power would be beneficiary to my country. Indonesia can be very uncooperative as an ASEAN member and they have their goals set on being the regional hegemon. They do not have the trouble of dealing with China unlike any other ASEAN country. Nationalism is at an all-time high, with all the Papua, Moluccas and Aceh separatists suppressed. Also their status in the international scene can be very unstable. Next thing you know, they'd be anti-West. And it also works for them that Chinese oil passes through 3 of their straits. They could cut off China from its energy if they wanted to, at least until the deep-water port in Pakistan is finished. They are an economic power already, even with refugees trying to escape to Australia making world news, an example is that the coconut industry in the Philippines is getting impacted by the cheap palm oil shipments Indonesia produces.
And as follow-up to the Silent Eagle suggestion, I've read that Australia plans to use the SH like the F-15 Strike Eagle. The Silent Eagle would theoretically have been the closest thing Australia gets to a 5th gen aircraft. And it would have been based on existing F-15 technology, making most of its capabilities proven and cheaper too, while being a better platform then the F-18. And the best safety net against a failed F-35 program. Sadly, all there is is a demonstration aircraft. Of course Australia could pressure Washington, but that's another matter. As you said and from a pessimistic PoV, RAAF modernization has come too little and too late. Politics may be to blame for the selection of fighters also. It's strange enough for me that Australia is the only country operating SHs outside of the US.
As for the F-111, I'm conceding the fact that it's just too old of a plane, if 150 hrs maintenance for an hour's flight or even if half of it is true, then it's just not worth it. I got roasted on that one. And again, apologies if my first post seemed too immature. Even if the only mission is bombing Fiji (and that's far away), the risks increase the more flight hours logged. And if we're talking of precise ground-striking, I also concede that the SH's capabilities are more than enough.
These will give a glance on my stance on the SH, just to see where I'm coming from.
Australia impressed by Super Hornet performanceF/A-18E/F Super Hornet vs. Sukhoi Flanker
They could have already been brought up here, and even the second link is quite old. In no way am I an expert on the Australian scene (defense doctrine, political scene, etc) so feel free to correct me or point out more flaws to my arguments. Can anyone also confirm if Australia is thinking on getting a few Silent Hornets (aka SH Block 3) too instead of just Super Hornets?