Maybe some recent time in a non-automated small aircraft should be a requirement, just to keep up those basic skills. And get checked on it. It would be quite inexpensive comparatively. What do the fancy sims cost per hour, with instructor?
The long wing on a glider (over 50 feet on a craft weighing 1,000 pounds) makes it respond slowly to control inputs in roll and yaw, imitating somewhat the response of a much heavier craft.