When and how should SCOTUS take up reasonableness review?

With the Eleventh Circuit today in Hunt thoughtfully rejecting a presumption of reasonableness for within-guideline sentences (details here), I am wondering when and how the Supreme Court will take up a case addressing post-Booker reasonableness review.  The circuits are split not only on this presumption issue, but also on a range of other large and small aspects of the standards and nature of appellate review after Booker. 

Because I think the circuits are very wrong when forcing district courts to follow the crack guidelines (as discussed here and here), I am hoping SCOTUS might explore reasonableness through review of a cracked-up crack ruling like Jointer from the Seventh Circuit or Eura from the Fourth Circuit.  But these cases raise so many hot button issues, perhaps the Court would be wise to take a lower profile case.   (Of course, the Court did use the high-profile Rodney King case a decade ago to consider departure authority in Koon.)

Given that a legislative Booker fix does not seem likely in the short term (as discussed here), the Supreme Court should no longer resist exploring reasonableness review on the assumption that the Booker remedy may not last.  Of course, the Court might indirectly address these issues in the Cunningham case from California to be argued in October.  Nevertheless, the federal sentencing world could be much more orderly (and less disparate) if the Supreme Court were to directly  address reasonableness review ASAP.