The simple fact is that we could have gone in with 4 "quicks" in every test so far this summer (as all 5 pitches have really suited pace over spin) and if we had done so, we probably wouldn't have lost in Tassie and would most likely have won all the other games (bar the Brisbane test, where Nathan Lyon got some wickets and here, where we have the 4) in even more convincing fashion.
It's a great option to have up our sleeves and I hope we employ it much more from now on (unless Lyon, or someone else who bowls spin, starts bowling "out of their skin").