My 14 would be:
Katich
Hughes
Ponting
Hussey
Clarke
Dussey
Haddin
Johnson
Hauritz
Siddle (if not fit then, Noffke or Ryan Harris)
Hilfenhaus
Jaques
Bollinger
McGain
Not sure whether Nannes is eligible for Australia given his Dutch nationality. If he is not eligible, Bollinger gets to go, just ahead of Dorey.
I don't think we should take Symonds at the moment, and that being the case there's no allrounder who deserves a spot in the team. As pointed out, one solution is to drop Katich down and play Hughes and Jaques, but I'm reluctant to take in so unsettled an opening pair - one debuting and one returning from injury. Plus I don't want to disturb Katich's rhythm at the moment. Rogers is in great form at the moment and deserves another go - he can have a go and see how he fares in the lower-middle order, given he's third in line at the moment to open with Katich. Hughes to be the back up batsman and hopefully learn a lot from touring.
That are the only changes i would like to see in the team, i would rather have David Hussey at no.6, no need squeeze in a proper opener into the lower middle just to see how it goes, rather give chance to a guy who is a proper middle order bat and knows how to bat in that position and has scored runs too in that position.
As i already said would definitely take the chance with Hughes with the kind of form he is in atm, comes across a very mature bloke for his age and i think he can handle the pressure.
Jaques struggled in the recent SS game, whereas almost everyone from the NSW side made big runs, and that's understandable too, as he is coming back from an injury and would take some time to get into the grove.
Still would have him in the squad as the reserve opener, but then there is also this case that he might be better off not picked in this series and allowed to play for NSW instead, so he can hit himself back into some form before the Ashes, and rather have Rogers as the reserve opener in this series.
Definitely won't take Symonds, my anger for his repeated off-field sagas not withstanding, his form atm is poor and not deserving of a test spot.
Siddle is another worry imo, even if he is fit, he would go into the series a bit underprepared and if in case he is not able to make it, then either Noffke, Harris or Magoffin would be decent replacements.
I like the look of Nannes, but as it has been already said, his age, his beamer problem are the two prime reasons why he is not much of an option, but even if he gets picked, it shouldn't be at the cost of Doug Bollinger, who even though didn't have a great debut, but still is deserving enough of a test spot on the basis of his recent domestic form, and there is no point either in handing over Baggy green's after every game to every half-decent bowler in the country.