A few observations...
David Hussey is a useless bowler, they are wasting their time using his offspin, he will always struggle to take wickets, and he gives up 5 an over way too easily, teams are content just to pick him off for 5 or 6 an over without any fear of losing a wicket. Don't be fooled by the fact he takes wickets in 20/20 cricket, spinners take wickets by default in that form of the game just by bowling the ball, spinners need zero ability to take wickets in 20/20.
I was wrong about Hilfenhaus, he actually has a good bowling action, bowls with good pace and bounce, and has a nice outswinger, I think he will do well in England if he gets the chance because the ball swings more there and for more overs.
I think Australia should use Bracken for more overs with the new ball, a spell of 5 or 6 overs at the start for 10 to 15 runs is more valuable to a team than a few overs in the middle of an innings for 4 an over. Someone else can bowl those overs in the middle for 5 an over instead, and Bracken can be used at the beginning to go for 3 an over instead of the other seamers going for 5 or 6. If my masterplan and mathematics are correct it means the team comes out about 15 runs better off doing that, and will probably pick up more wickets. They can still use Bracken for when the opposition take the powerplay or at the death. I just think it is a waste to use him when teams are content to pick off his cutters for 4 or 5 an over. Look at his stats for the series, he has gone for 4 an over and hardly taken any wickets, the way they are using him now is not working.