Even I like Skyrim more than any other game there's still one annoying thing I want to change immidiately when the Creation Kit is released. I have completed Stormcloak questline and even now it's impossible to free Skyrim. Imperial Legion commanders are important characters for legion questline so they are essentials. This thing remains even the Stormcloak questline is running or completed. It's annoying I can't totally clear imperial legion camps because their leaders are not mortal. It makes me mad. (I also didn't like that all your followers are essentials.)