"There is actually a hidden mechanic called "Trending" in which customers ask more and more items that you sell to them and less the ones you refuse!"
Tonight, whilst streaming, my stream chat was given this interesting bit of information by Frodo/Flaporte. It blows my rack strategy out of the water -- but I've been told all along that I was incorrect anyway.
Obviously I have a thousand more questions based on this one teensy morsel, but they're all more along the lines of speculation.
- Does the "trend" in a category reset? decay? improve?
- Can selling low level items in a category increase the number?
- Is "trend" shop-wide or individual?
- Can suggesting into a different category prevent walk-in trend loss?
It would account for why I have such a high rate of impatients on Frostfire Talismans and Gaia Hearts (I sell a lot of goddess tears). It would also sort of explain the high rate of Frostfire Harps to people constantly selling Ocarinas, and perhaps even KOS (but I'm told that's a stretch).
Anecdotally, I think it can be observed but hard to confirm player-side. I still think racks have some sort of influence, but that's also my stubbornness.
For example, I often notice that shortly after placing a rack, customer behavior is altered towards that rack's category. It has happened enough times for me to feel like it's more than coincidental but hey, I was wrong about this so I wouldn't be shocked if I was again.