Lack of Stick-Rudder Skills
I'm negatively impressed by the lack of manual flight skills shown by some Captains with whom I fly. Due to operational and safety pressures, most of them are reluctant to fly manually, so they tend to explore the automation of the aircraft to its limits. By doing so it's true that they are following the guidelines of the operational and training departments, but at the same time they are worsen their weaknesses, when it should be otherwise.
Best example is the constant descent profile, without FD's/AP/AT some of them will be unable to fly a satisfactory profile. And during landings, most of the times the AP comes off well bellow minimums.
There is an extreme FMGS/AP dependence, in my opinion it should be mandatory to manually fly one departure and one approach at least once every month.
JGSE