Lol, with the current break rates? No chance. Especially since some schools of crafting with no breakage would be immune whereas enchanters and masterworkers would be screwed Crafting is already punitive enough and expensive enough to level, I don't see how delevelling crafting levels - at all - would improve the game in any way, shape, or form. What are we hoping to gain by delevelling crafting skills? What does it achieve? If there had to be a trigger, I'd suggest some number of days passing without using the skill, which makes a bit of logical sense, as you'd be out of practice. But I'm thinking weeks here rather than hours. If you haven't chopped a tree or mined an ore or crafted an item in that tree for so long, possibly. Of course, this is pretty punishing to casual folks and/or people returning ot the game. Perhaps use online time rather than calendar days?