[Hellstrom]

Point taken, but the enchantment forges already limit what enhancements you can give to an item based on notoriety and level. And Thay has ILR in place so characters can't use items that are too powerful for them. Funny story - one of my characters enhanced his main weapon and I stupidly wasn't paying close attention and managed to make the sword unusable to him for the next 10k xp. Oops :)

Anyway, I guess it could happen, but I don't expect PCs to be forging so many items that casters are negated. That would cost a lot of gold and xp.