I do not like that idea at all. There are plenty of people who have also been farming the bejeezus out of a certain dungeon/raid trying to get X drop for glamour, so simply because they are a higher iLevel, they should get a penalty? And then there are those who use their dungeon drops to turn in for GC seals (this obviously wouldn't apply to all gear since not everything can be turned in). Who is to say the gearing of your character is more important than whatever use they have for those seals?