I think a really cool feature that would be relatively easy to implement would be that of naming items of yellow quality.
If you are a smith, for example, and you craft and upgrade a twohanded sword to the highest quality, you get to name it once, permanently, and everyone who ever inspects that item sees the name you gave it. This gives a personal touch to crafting that could add to those of us who plan on selling our wares.
Thoughts?