I too miss this feature, and hope to see it back in soon. I really want there to be some statistical reasons as to why I would use one weapon over another (such as yes, I could use the Silver Longsword, but it breaks a hell of a lot faster than this Steel one that does slightly less damage) and it added in a small bit of difficulty and realism into the matter. Not to mention, it would actually make Smithing a bit more of a viable skill, because as for right now, I feel as though it's a bit hollow.
I imagine once the CK releases, and the UI is figured out, adding it in should be no trouble at all.
Why would I, a mage, want to train smithing just so i can keep my sword in top notch condition.
To be honest, you didn't have to train the Armorer skill in Oblivion and Morrowind. You could've just handed your sword in to the local blacksmith and have them repair it for you for a variable sum of gold. I know that's what I did with my first mage character.
Of course, the only problem with that is that gold was ridiculously easy to come by in vanilla Oblivion, so it basically made the Armorer skill moot.