What is the reason for hiding the slots on a timed node?

[Brightamethyst]

Bad as Gathering is, Fishing is so much worse. A myriad of external resources is practically required for Fishing, and while they EVENTUALLY started adding some of that information in-game (time and weather requirements for certain fish), what they have is vague yes/no answers, and even those are unavailable for Big Fish.

That actually seems to be gone in ShB. All ShB fish just show ??? for time/weather/conditions (except the Crystarium delivery ones, which display like normal.)

[LineageRazor]

That actually seems to be gone in ShB. All ShB fish just show ??? for time/weather/conditions (except the Crystarium delivery ones, which display like normal.)

I don't remember for certain if it was the case for Stormblood, or not, but revealing the time/weather/conditions only applies for fish from previous expansions. The current expansion keeps it mysteeeeerious, even for regular fish. Again, this is likely to give fishers who do their homework an edge over those who don't.