I reckon resting a few guys who look completely knackered wouldn't be the worst thing. Anderson looks shattered, Broad not 100%, same with Bresnan. It no use giving Bairstow a test at a time, does no one any good.
My Team for Sydney
Cook (Just needs to grit it out)
Carberry (Although he needs to sort out this round the wicket caper soon)
Root (Needs a score, but getting consistency from him will take time)
KP (Absolutely no doubt he's the first name on the team sheet)
Bell (He'll come good)
Stokes (Shown promise, was better than I expected)
Bairstow (As much as I don't think he's good enough, dropping him now is pointless for everyone)
Borthwick (Worth a go, Panesar hasn't looked too threatening)
Broad (Think he needs a rest, but probably can't miss him and Anderson)
Finn (Got real pace, which Eng have shown in their batting is difficult to face in Oz)
Rankin (Worth a shot, extra bounce and hits the deck hard)