Galerion True Unarmored
The Unarmored mod. Yes, unarmored as in no armor needed to increase your Armor Rating, this mod simply adds a couple of tokens outside the sewers when you complete the tutorial, and the tokens will improve your Armor Rating just as light armor or heavy armor will. It even has perks such as weight affecting your unarmored status.
This is most recommended for mage types and conan the barbarian type characters.