Going Lightly Armored

Supplement I introduces the idea of giving Fighting Men a bonus to their Armor Class based on their Dexterity. While I appreciate Gygax's feeling that he needed to "beef up" Fighters, I have been considering ways to make going lightly armored more attractive to all classes in OD&D. One option I am considering is allowing a Dexterity bonus to Armor Class only to characters wearing leather or cloth armor. Another option is allowing Fighting Men so armored -- and only Fighting Men -- the chance to deal double damage from behind if they surprise their opponent. This would give a tangible benefit to a "sneaky" Fighter but at the cost of heavier armor. I have discovered that, in OD&D, being able to wear chain and, especially, plate armor is a huge boon to survivability, so foregoing that in exchange for the chance to deal more damage under the right circumstances seems a fair trade.