I don't think anyone in Sky has done a bad job (although you could make a case for Froome being below par) but Kwiatkowski has been phenomenal. One of the best riders in the world and he's totally committed to the cause.
I think Sky this year has been a study in how to best use your entire team in a GT. If Froome wins he owes even more than usual to his teammates and the DSs.
I wasn't sure exactly what Kwiatkowski's role would be at this TdF. Thought he was perhaps in for a stage win or long break.
He's been unbelievable working for Froome. Most rounded rider in the peloton?