I think Howard, Social and others can go overboard at times, but I think their criticism over the team selection isn't solely based on this series.
Let's not forget this team lost a match to Pakistan, who are a reasonably poor test team. They also almost lost to Pakistan in Sydney (and even if the result is dubious and Pakistan fixed it, that's even worse for Australia) and weren't exactly brilliant against the West Indies.
Whether you agree or disagree, they've been pointing out what they believe are selection flaws for ages. Hussey and North failing in particular are ones that have annoyed them a lot, and since those two were fairly poor in the series, they're just continuing their calls for them to be dropped.
While they are seen to be disappointing performances in the eyes of Australians, let us not get away from the fact that this is a decent yet far from outstanding Australia side, therefore a defeat here and there against lesser sides like Pakistan or close run things with WI are surely inevitable!
This is not to say they are under-performing or these players are rubbish, it is just a fact that they are not the side they used to be, and it will take a while for Aussies to become accustomed to the fact they are now back in the pack.
Yes there are players not performing, but there always have been and always will be at any given time, but it is now not being masked by the top players winning them games.
Completely AWTA.
About Hilf, Yes, he was bowling plenty of jaffas which moved away just the right amount and were too good for the batsman. But at the end of the day you need a stock wicket-taking delivery such as an off-cutter or a yorker which you can use after setting up a batsman. His off-cutters were severely under-bowled and a developing a yorker will help him in a tremendous way, IMHO. Hilfeh can bowl extremely tightly and accurately throughout the day and trouble the batsman, but if walks away at the end of the day with a 2-80, he deserves a 2-80 and if Johnson walks away with 4-100 despite bowling 7 wides and taking all 4 wickets in an hour of play, he deserves his 4-100. Hilf has awesome talent to work with and seems a likable fella, so I really hope he develops into more of a strike bowler.
Hilfenhaus surely does have a stock wicket-taking delivery, the outswinger, but sometimes you need to alleviate from the plan, sometimes with great success other times without. Bowlers do not always get their rewardds by any stretch,
If Hilf is not taking wickets he must try and keep it tight which he appears to be doing so effectively, he does not have to become more of a strike bowler.