Seems to me they're not going to get what they want, i.e. a quick scorer up top with Cook a la Warner, a game changer at 3 who can play as the mood suits (though we have one at four).
Compton could open with Cook, but that puts extra pressure on the skipper to score. I believe that you've got to give a new player at least two series, ideally home and away, or a summer at home. They can then assess based on temperament and technique as well as scores. Lyth may get another go, but he clearly didn't learn to leave the ball, which I acknowledge is difficult if he's listening to external and possibly internal (England staff) noises about quick scoring up top.
I think Hales is stuck in a stick or twist and it's clouding his thoughts. He may well not be good enough for Test cricket but let's give him at least the first series of our summer. They could play Compton with Cook, but then where do you go? Ballance at 3? I've never seen that as his ideal spot and Taylor isn't setting the world alight at 5.
A lot of uncertainties; 1,4,6 are nailed on, but 2,3,5 not so much.