Even though North has been thoroughly criticised, I think one of the main problems, if not THE main problem, with the current line up is Ponting's form. If you look at his batting graph since the 150 he made at cardiff (
HowSTAT! Player Batting Graph), he has been failing much more often than not. Also, if you take out the double century he made against Pakistan, since that time he has averaged something like 28. That is abyssmal.
I really feel that if Ponting returned to form, most of the issues currently being raised would resolve themselves - if the no.3 can score consistently, I think it will not only improve Clarke's form (because he seems to love being in partnerships with Ponting), but it would put less pressure on Hussey et al., and they would be able to score more freely.