I'm open to discussion, but my opinion on the most enjoyable and satisfying crafting system I've ever played was from Star Wars Galaxies.
Say what you want about the game, but crafting was a blast.
Materials and their stats were varied.
Material stats played into item's power.
Players could label their items as a marketing device.
Non-craft players formed repeat business with crafters they knew took care to do things right.
I literally played the game for 4 years and raised my blaster in anger maybe three times. That's what made it cool. I could become a master crafter without having to be a combat god.
Thoughts?