valkyrian F-22's aren't for sale yet so that can't happen. The Copp person I've read mixed things about him maybe some of the guys here from Australia could explain him better. Australia would have done a little better with range, payload, better pure fighter with the F-15E or what ever later model. The con's of buying F-15' s you have have had to train over your pilot, maintenance, and supply chain, all money and time. Even the mighty F-15E doesn't replace the F-111 as a striker one for one , but does well in certain areas. The New Hornet's share at least 25/35 percent of the same parts, training, etc with the older Hornet's so it's not totally starting over like with the F-15s. The New Hornets will be around longer and have much more of a future which is always important. The Block-2 Hornet's are very advance platforms and the biggest knock against the Hornets replacing the F-111s is range and payload. Let's be honest F-111 is huge and carries tons of fuel nothing being built today besides maybe the Su-35/32/34 in that class anymore. Australia never had a better fighter then what they have so there only gaining with the E/F Hornet not losing? The E/F Hornet's ASEA radar and better missiles out class anything on Australia's nearby friends flying Flankers. And the same long range missile shots would be used by the F-15s would be use by the Hornets too, see not much difference on how the fight would be fought. The F-111 wouldn't last against a Flanker either so you would never want to go down that path.