So, we all pretty much know that there isn't much need to learn recipes in-game. For a brief, transitory time the recipes weren't known, and there was much joy and gnashing of teeth while discovering them.

SE even went so far as to keep the recipe database server-side so that it cannot be dat-mined. But now community sites like YG, Eorzeapedia, ffxivpro, zam, etc list pretty much all the recipes in the game. And this is generally okay, recipes for relatively common items shouldn't be impossibly difficult to come by.

But, do we want something additional in terms of recipes?

Something along the lines of a recipe that takes a special quest to unlock. Placing the materials into the craft UI window and pressing 'synth' wouldn't yield anything, unless the this quest had been achieved.

There is already a mechanism along these lines: the crafter quests. You have to go through the "requested items" button. Sometimes an item will be added to the box, and sometimes not (for example, the blacksmith rank 20 quest does not add any item -- they are all player-supplied, or at least were when I completed it). Adding these materials through the usual process does NOT result in a valid recipe.

As a further example, the rank 20 tanner quest yields an item into the inventory that the player can wear and use ... a wood wailer jacket. (side rant -- if I had known that the wood wailer jacket recipe was going to be this long getting added I would NEVER have turned it in).

What do people think of adding recipes like this, that are the result of completing quests, but for items that can be used and/or sold? Just like the accomplishment of unlocking a new ability (or soon job), it might add something for the crafter side.