I think it a good idea to try Lawrence, Bracey and Bess.On the batting side, unless any of them are completely shot mentally and there's risk of doing psychological damage, I would play the youngest group possible. No point playing Bairstow or Burns when we know there's no chance of them being part of England's future. Lawrence should get a shot.
Then does anyone know if James Bracey is still in Australia? Scored a battling century for the Lions, seems to have decent defensive technique and is a better keeper than Buttler. Would like to see him come in for the last two Tests as well, and get some more top level experience.
On the bowling front, we don't actually have any young bowlers in our squad other than Dom Bess. And anyway, the seam bowlers haven't been that bad - Anderson, Robinson & Wood probably deserve to keep their spots.
England seem.to be naturally conservative and I would be surprised if Bracey especially comes in.