It's clear they are going to go with Ali to open and then probably give Hales a run starting in SA - hopefully he'll then get that series then at least the English summer.
In 40+ degree heat, the option of an extra bowler being squeezed in has to be appealing. Moeen can't open and be the No. 1 spinner consistently, but for this series, in these conditions, him opening gives us far more options.
I actually quite like the thinking. It may be a baptism of fire in SA for Hales, but you could argue that he's better suited to those conditions. He could have an absolute horror in this series against some top spinners - may as well give him his debut in conditions that he favours...
Taylor's (to quote Bob Willis) the next cab off the rank in the middle order