For some quests you need to make crafted items. The obvious example are the daily crafting quests, but some other quests also require you to craft certain item (for example a level 28 quest in Illaneska called Assisting The Watch which requires 3 weapons of different levels).
When crafting I always double or triple check to make sure I have the right item as I don't want to waste materials on making the wrong items. Yet I still make a few mistakes now and then. And I doubt I am the only one doing that.
I thought an easy helping tool would be to have items that are required for a quest will be highlighted in the crafting overview (or otherwise stand out from the rest of the items). This will help people avoid making crafting mistakes which will benefit their enjoyment of the game and in turn everyone's general happiness.