There are atleast two spots open, actually three, Shafiq, Shan and Babar. One of them has to be filled by Fawad, because of his experience. Even at #6, I would like to develop somebody like Fahim Ashraf as allrounder, that give team better balance as well. But middle order has to solid, we need to have the best we got.
Before first test people were complaining that Harris has not played even FC match in 3 years, yet he looked more at home than anybody else (offcourse except Azhar), that also tells me Fawad will do good specially in Asia.