how, exactly, is cooked fish going to stay edible through the merchants' trip back to their home settlement, or even to the next town?
Drying, smoking, salting, pickling, sugaring, jellying, lye, canning, jugging, fermentation . . .
All of which are perfectly good methods for preserving foods, and all of which (with the obvious exception of fermentation) are entirely absent from DF. Currently, the only way to prevent food spoilage is for a dwarf to set down a stack of food, sternly point his finger at it, and firmly tell the food that it is
not allowed to spoil because it is located in a "food stockpile", whatever
that is.
Which, in itself, could be thought of as an exploit, because although dwarves would certainly know of & practice techniques like curing & twice-baking (and refrigeration, depending on the biome), the "food stockpile = magic" mechanic allows (and indeed practically
forces) the
automatic preservation of
all foods for an
infinite length of time.
Which, of course, plays into the whole idea of agriculture
itself as an exploit, in that farming is so ridiculously overproductive that
a single tile of farmland per dwarf is enough to sustain a thriving population indefinitely. But when you consider the current ease-of-gameplay safety measures like dwarves only eating once per month, it's pretty clear that Toady intends to give the food & agriculture systems a major overhaul at some point, and has left plenty of belt-tightening room for when he does so.
And would this challenge at more fun to the game, or just tedium?
That depends on whether or not the Manager's functions would extend to orders like "Maintain an inventory of between 10 and 25 (fish roasts) or (meat roasts) at all times", and "Increase stockpile of hardtack by 100 each year". If such housekeeping matters were not automatic and had to be attended to by the player each time, that would get old
real fast. But if the Manager could indeed handle it, then it should add a good amount of fun, with dwarves getting happy thoughts from setting up the fort's first Kitchen & enjoying the first hot meal they've had in months . . . and
unhappy thoughts from being last in line at the cafeteria, so there was no more chicken soup left & they had to gnaw on some month-old goat jerky instead. Realism! Immersion!