ONE LAST THING
In the ideal world, they would take this even further. They would make the crafting tier challenges require groups of crafters working together, cycling through a couple of challenges, each in their own class, and all having to be successful to complete. Once complete, an item would drop and people would roll on it like Coil.

This would have a few of awesome potential results

1) Encourage crafters to work with other crafter and to share skills and knowledge

2) Make crafting more social

3) Add more potential for variety in content for crafters and unique experiences

4) Enable some post-max crafting level story potential as these group crafting quests could have plot around them like Coil does.