I like where you're going with this...

It would be nice if there were craftable items that the crafter had to get from the dungeon himself. Currently anyone can use tomes to buy the ilv 70 crafting materials... so the crafter doesn't have to run the dungeon himself. Take Rose Gold jewlery for example... have the same recipe, PLUS an untradeable ingredient from a dungeon (Copperbell!!!) and make it five levels higher - so there's an incentive for crafters to run dungeons? Perhaps ingredients could come from fates or pvp as well. This or other gear could also be untradable. Perhaps the same "Rose Gold" recipe could be altered differently by using differnt dungeon drops?

Currently the Rose Gold jewlery I make is exactly the same as the Rose Gold someone else makes. There's nothing unique you can make yourself, and very little customization.