Given the churn of openers the England team has had recently how long should Lyth be given - or anyone else for that matter? Lyth has been the leading opening bat for the county championship winning team for two years and really earned his spot.
However - it is clear that may of the most successful openers in the past have started in the lower order and then been pushed up the order - Even Ali Cook started at 3, while Langer and Haydon started in the middle order. Michael Vaughan started in the middle order, whereas Trescothic opened in a few ODI's and off he went.
In recent past Lyth, Compton, Robson and Carberry are all openers who have had to go out and face the new ball from the start of their career, as a batsman this has to be the hardest way to start a test career, especially in England against the Duke ball - I consider Trescothic to be the exception given how well he played.
Where I am going with this is - if Moeen was given the opportunity to open in the winter will he have an advantage because he has played for 2 seasons already. Is that fair on Lyth who has had a test career of facing Trent and Southey followed by Starc, johnson and hazlewood! (as did Carberry!)
I have to be honest, i can't make my mind up as to what the best approach might be.