Ok, how possibly can you know that it is a simple task? In Oblivion, it wasn't. All men walked like nancy boys, and if you changed anims then women walked like some gorilla bouncers. It took few years until that could be separated.
You make a good point. I didn't really get into Oblivion modding until after we had good tools for animation modding. The whole animation system has been revamped for this game AFAIK, so it could go either way. I recall hearing that they licensed some third party technology for animations, maybe looking into that would give us some better insight.