I don't think it's really possible to deliberately prepare such a surface at Edgbaston though. The soil type just doesn't allow it.
You can prepare a green seamer, deliberately, in most places. And certainly most places in this country. And absolutely certainly at Edgbaston. But the decision will already have been made, and I can just hope it's the right one.
Come what may, England need a result pitch. If it's a case of seam-vs-seam, England IMO have the edge, just. But it should result in a cracking game, and that's what I'm most anxious to see. A result pitch is also in SA's best interests for mine, because I think the worst thing for them would be a draw in this game, as I can just see them repeating their foibles of The Oval 2003 if the situation is the same (ie a 1-game lead). If it's 1-1 going into The Oval, they're challenged to win again there. And obviously, if they can come-out on top on an Edgbaston seamer, that's the series sewn-up.