Guild Wars 2

I agree that crafting should have separate storage for portions and parts of multi-part patterns and recipes.
If you are making armor, you have the enhancements as well as all of the item parts for each piece that you are crafting, along with all of the materials needed to craft. The bank has slots for the basic materials, but not for all of the individual parts for jewellery, clothing, cooking, weaponry, tailoring, etc.
For jewellery, you need your ingots, your bands, your chains, your settings, your filigrees, your hooks and all of the special materials from each metal used that will make each piece an individual piece with specific stats. Cooking is, as was pointed out, cumbersome. You either fill up your bank that is shared by alts who have their own crafting storage needs, or have your bags stuffed to the point that you have trouble getting loot if you are out questing or doing instanced activity with multiple rewards, as in Black Citadel’s “Protect the Weapons Parts” quest with waves of attackers dropping a lot of loot to fill your bags.
You can sell the junk, but first, you have to be able to hold it and the good drops, because you don’t have time to sort it all out during the fighting.
Newer players cannot afford 10-slot or larger bags immediately, and even those will not adequately provide enough storage if you are heavily into crafting, as many are.
Casual crafters don’t seem to last very long. Those of us who are invested in it do need more storage.
Since some of us do two crafts, perhaps each craft that you do could have its own storage facility at that specific crafting station that could be opened through a Craft Representative like a bank NPC for a 50-60 slot bank for crafted ingredients or parts that are necessary to create the actual item. If only crafting-related items, raw materials, parts of patterns or recipes, or completed items (such as parts of an armor set that will, when worn together, make a complete Armor) were stored, that would free up Adventure Bag Space, which is needed if you killing large numbers of mobs and your bag space has been reduced to the point that you have to throw out items instead of selling them for cash in order to make room for other items.

Raw materials stored in the regular bank would be those that alts could sell for cash, or use to start their own crafting.
There are no bank slots available for each individual part of an amulet, a sword, or a helm, or a complex recipe.
That means bag space is uncomfortably filled.

So…I agree that there needs to be more storage space for crafting that is allocated exclusively for crafting items that must be made before you can put together the completed item.