Can't believe you two think the Australians might change selection based on which seamers England pick... Put the boot on the other foot - how would you change the England side based on whether they play Labuschange or Marsh at 6, or Siddle vs Starc? Also can't believe that what the groundsman will do on the morning of the game might be a surprise to England in a home Ashes series!! Not that there's anything to stop them changing the team anyway.
Clive Woodward used to announce teams early as a point of principle, show some confidence, Brendan McCullum did the same. Don't totally buy into that but it's a better point of view than trying to keep your side secret because you're scared the opposition might out-select you...
I didn't say the Australians would change there side at all..... in fact i am sure they have had a side sorted before the press conference...... but that's the point.
It is all about the mental 1%, heck less than 1% that will make a difference and if that disturbs the opposition batters not knowing who's coming at them the next morning as they sleep that night, then great. If it makes no difference, then what have you lost..... nothing.
As for the pitch changing, well we have seen plenty of pitches change overnight after being under covers or whatever or more importantly weather conditions changing.
This is a general principle i am talking about though not just specific this match.