At least, personally, I feel that at the point of marketing a name as high as Harry Winston, there should be no, or minimal budget constraints to build an entirely NEW case for the similar movt.
In fact, the Z series should have remained rare. They should have made a totally new case design, not derived from the existing Z. The movement can remain the same, but they should remove one or two functions/complications...or add on a module to make the complication different.
The dials should be totally different with no relation to the Z.
"....but there should be a way to allow the early adopters and customers to still keep what was sold to them as a concept....a Rare Watch. "...a very valid point indeed.