Crafted early on before all the changes so a few quick questions:

How do people gain crafting XP now?

I remember reading that shards would no longer yield xp upon decon, so what does everyone do with the shards created during the crafting process that will never be used?

With the failure in crafting eating up ingredients, does it make sense to even attempt recipes greater than 5-10% failure? I'm talking about the ones that require certain collectables/soul gems and/or rare items?