I think that's a great idea.
I'm not at endgame (not even cloosseee) but what ive read on the forums is that there's really no point in crafting high level gear since dungeon drops are better. Perhaps if maybe a boss drops a "rare ingredient" and someone can loot the recipe from a chest by chance and then the crafter could either buy the "rare ingredient" or be the one that loots it from the boss and makes a really powerful piece of gear or accessory that's better than whats gotten through dungeons. I think that would be fun, and I've seen it in other games. It'll help money go to/from crafters to disciples of war or magic instead of crafter to crafter because that seems like what it's like now.