The two things I'd add to your list are:

"Take-off, fly circuit and land from both directions (of main runway)" Our field requires different landing approaches depending on wind direction... it's amazing how much anguish arises when a wind shift comes along and people are forced to land from the "wrong" direction.

and

"Successfully (ie no major damage) demonstrate the ability to perform a dead stick landing." This need not be during the "wings test", but the student should be able to handle a dead stick. This skill could be demonstrated by a student landing deadstick on the buddy box prior to the wings test. I'm personally not keen on the idea of forced deadsticks(ie shut down engine in flight on purpose) during a wings test, but if required I suppose the instructor could simulate this by letting the student fly the pattern and (when the instructor figures it's safe to do so) telling the student to bring the throttle to idle and land without touching it again. I realize idle/deadstick approaches and landings will be different due to the idle thrust of the motor, but it's a decent way of practicing without risking the student's pride and joy unnecessarily.