A good question. I believe that Hameed especially shined in the toughest of environments in world cricket, he is owed another shot. Jennings had a good start and for me the jury is still out, but again he should continue to get chances. Hopefully they both have decent first-class seasons.
Cook, Hameed, Jennings, Root, Bairstow, Stokes, Livingstone, Ali, Woakes, Broad, Anderson.
There's Mark Wood (if he ever gets fit) and Jake Ball waiting in the wings if Broad, Anderson or Woakes can't play.
The only spot that's really open for me is 7.