The impact of Andrew Flintoff in the 2005 series forced Australia to discard their traditional six batsmen and four bowlers approach to accommodate a genuine all-rounder.
A plethora of injury problems to Shane Watson and off-spinner Nathan Hauritz's worrying lack of form are likely to force the tourists to turn to part-time spinner Marcus North as their all-rounder.
A fully-fit Flintoff gives England the extra option of playing an additional spinner or seamer.
But whether the Lancastrian's form with the bat can justify the number six slot remains a headache for the selectors.
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