FFS, I wrote a long (for me) post just now and it didn't work. arrgghhhh.
Basically I think McDonald would be a decent selection at the GABBA, he's way more suited to bowling there compared to Hauritz. My slight concern with Andrew is that in the conditions that suit his bowling, his batting will struggle more and vice versa. He is in good form though it appears since he made 163 in his only first class innings this summer!
Whenever I see teams with Khawaja and Harris or Siddle I get excited! Khawaja is a must IMO and I just think that Harris or Siddle in our pace attack is a great addition as I just don't think the balance is correct with Hilfenhaus, Johnson and Bollinger at the moment.
I know Harris isn't back yet and Siddle is only just back from injury and looks to be being monitored closely by Victoria, but we still have about a month before the first test starts.
My 12 for the first Test at the GABBA would be:
Katich, Watson, Ponting, Clarke, Khawaja, Hussey, Haddin, Johnson, Hilfenhaus, Siddle/Harris, Bollinger, McDonald.
If McDonald is 12th man, the tail starts a little early, but really lets hope the batsman make the big scores and the bowlers are the ones taking the wickets, surely that's not too big an ask.