Good Lord, as an American on a mainly European site is it really true that when you ask if the crew wish to perform additional maneuvers after the boxes have been checked that those maneuvers are graded? As a former and most likely future LCA I find that appalling.
Once a crew has checked their boxes, extra time is for them or myself to look at things we think might be important, not to find an extra way to destroy a career.
Shameful if true. Extra time is just that, extra. A crew that wishes to practice something "just to see" gets to do so, no strings attached.