I've only named 10 above missed Broad out - sorry...so yes 7 certainties (Cook, Trott, Pietersen, Prior, Swann, Broad, Anderson ) playing today plus Bell. The fact that Carberry is opening suggests to me that perhaps Root isn't a certainty. Tremlett needs to do well as yes he could be replaced by Rankin or Finn. Ballance won't play in Test which could let in Stokes.
I follow few ex-Cricketers on Twitter and several of them have been tweeting Carberry was the answer to our top order problem since Strauss retired.We've got a good record of introducing new players into important series so I think Carberry could do well.
And of course there's Bresnan to bring into the mix, he's approaching full fitness.It's a nice problem to have and will enable us to select a third seamer based upon pitch conditions on the 1st morning of a test. Fast and bouncy then Finn, Tremlett or Rankin. If it's more batsman-friendly or looks like it will seam then Bresnan comes into the equation.