Amineri, the "all HQ ingredient only" part can jeopardise the Inventory as well. Because if you are missing one ingredient, no one in sane mind will go ahead crafting. The HQ ingredient will stay in Inv until you get to collect that missing piece, and if you have several different HQ ingredient for various recipe but missing pieces, they can quickly stockpiling up. With the current system, at least you are free to try with missing pieces HQ, because you still have a chance to get HQ, you don't really waste the remaining HQ ingredient.