From what I have read the whole HQ thing is crap. Here is my understanding...if you have 70 quality then you have a 7% chance of HQ if you have 300 quality then you have a 30% chance. This whole crafting aspect of the game needs an overhaul. Here are my suggestions:

Synthing HQ items need to be addressed

Stacking abilities

Destabilizing needs to be ajusted (I tend to destab 60% of my synths with that specific stat capped)

Local Leves need to have the guild marks on them (I rarely get these, one of the main reasons I do not do them)

Mats for recipes need to be changed, some recipes call for a higher ranked mat (of that same class) to be used in a lower recipe, example Bronze Arrow is a r10 recipe BUT in order to make the Cedar Arrow Shafts you need to be around r24.

I find that crafting is tedious and I wish and hope that the new team makes it more enjoyable.