Thought of a couple other things to say. I am happy with the way the craft system works now except for dragons. I don't see a need for changes with biped crafting. A few cleanup issues are fine but dragon crafting on the other hand is a different story.
For a dragon toon, by leveling one single craft school namely dragoncraft, you get skill for scalecraft, essence harvesting and shaping, spellcraft, mining, quarrying, smelting, stoneworking and gemworking with salvaging and transmutation also.
For a biped to get all those skills they need to level at least three schools likejeweler, scholar, and armorer (similar toscalecraft). Except even at that a biped couldnt make its own weapon (dragon claws). So you might have to add weaponcraft to that list.
Now throw in lairshaper which gets both crystalshaping and lairshaping skills and thats like mason and fitter.
Seems to me if anything needs changed, I would think about balancing the dragons and bipeds. One could either reduce the number of biped schools (spread skillsto fewer schools like dragons) or increase the number of dragon schools (split skills across more dragon schools).