...the need for the focused and very dedicated top collectors to get rid of less desirable pieces at a premium sales price?
Surely, the "faded inserts" and "tropical dials" demand is based on irrational fashion trends (much like "patinated jeans" a few years ago). Irrational in the sense that traditional watch collecting is focused on condition, the better condition -the happier collector. I seriously doubt that these patina anomalies on reasonably common models are held in high any esteem among the "real" high end collectors. However, creating a "thing" about these "desirable" anomalies coupled with "innovative" pricing will ultimately serve the high end collectors in generating sales for pieces not desired.
It's if you were a high end sports-Mercedes collector and found out that you could actually get rid of your old rusty specimens at a premium price instead of making an expensive restoration effort before selling. Who wouldn't?
I guess it just goes to show the totally ridiculous logic of the watch collecting (and fashion) market.