It seems strange that Alastair Cook isn't around to open the batting in the ODIs given his form, but I think I'd be wanting to find a way of getting England's second best batsman from The Ashes into the side if the Australian ODIs mattered at all. With Bell back, Trott doesn't have a natural position in the side if Davies opens and the best short-term side might be Strauss, Trott, Bell, Pietersen, Morgan, Collingwood, Davies, Bresnan, Swann, Shahzad, Tremlett (given that Anderson isn't available).
But with the World Cup coming up in the sub-continent it will be interesting to see if Trott gets a look in. Class player though he is, there may be a suspicion that slow low wickets may mean that Trott will find it hard to score quickly. If they're single-mindedly preparing for the World Cup, perhaps the side might end up being Strauss, Davies, Bell, Pietersen, Morgan, Collingwood, Yardy, Bresnan, Swann, Shahzad, Tremlett.
It will be interesting to see if Woakes gets any sort of chance to impress. I can't help feeling that Shahzad could be a little expensive in Australia, but I suspect the England management will be hoping that he can get some reverse swing in the middle overs before the ball change and if he can that would be invaluable in Australia and at the World Cup....