Hi! Items with ilevel 200 from heroics have no icon, just the bossname. Maybe you could add the heroic (10 man raid) badge icon for them which is currently used for the items bought from the dalaran vendor: Arcanist Ivrenne?
And Items from professions could have the profession icon? (Blacksmithing, Leatherworking, Tailorin, Jewelcrafting for trinkets).
example profile with missing icons: http://www.wow-heroes.com/index.php?zon ... =Vogelmann
(I don't know someone with 25 man badge items from dalaran but this item should have the 25 man badge icon if not already used. )