If you’re a bowler with an unorthodox technique you can still thrive in international cricket. I don’t think the same can be said for batting. Sure there’s the exception of Steve Smith, who has an amazing eye, and still gets in to good positions in his own way, but others are few and far between. The problem with England’s batting is that we have SO many players with techniques that you wouldn’t coach. In the first test you could argue that 5 out of the top 7 had unorthodox techniques, some which may work in white ball, but don’t in the longer form, especially when they make the jump from domestic to international.
When you only have Root and Crawley batting in an orthodox fashion, and Burns, Sibley, Bairstow, Lawrence and Buttler batting in their own, individual styles, I question whether any input from the England batting coaches will do more harm than good.