You should have acted. They're already here. The Elder Scrolls told of their return. Their defeat was merely delay until the time after Oblivion opened, when the sons of Skyrim would spill their own blood. But... there is one they fear. In their tongue he is Dovahkiin; Dragon Born!
This simply adds a craftable "Viking Helmet" that resembles the Helm of Yngol. The Helm of Yngol is also worth more (It is a treasure item after all). As much as I love Skyrim, it bugged me I could only find 1 steel horned helmet with upright horns. The Helm of Yngol IS a cool treasure item, however it can't be tempered and when I got the Helm (For the first time) it's armor rating wasn't as good as what I was wearing. Anyways, I just thought it'd be cool to be able to craft a helm with upright horns and be able to improve it as well.