All of the above could be covered in an aero's course followed by dead stick landing from downwind in a normally powered a/c. To learn gliders, specifically, is a whole new ball game and not logistically realistic.
The most simple of exercise in a big jet is to come over head the rwy at 90 degrees, 4000' clean speed, make a low drag CDA to either rwy, with or without PAPI. To my mind that should be in every 6 month check as a recurrency training. It was a common manoeuvre in my previous life, but is now frowned upon by the current crop of managers and so the crews have no idea how to do it. Simple basic a/c handling. Disappeared.