Light armor is better suitable for advanced characters who have access to following: Food with high health and healing rate (as opposed to stamina), any essential consumables, well trained combat skills (which reduce stamina cost), and selection of high grade, upgraded weapons so they can confront any enemy type. Knowing your enemy and being capable of avoiding their attacks easily helps too. You'll be able to gather more and move and fight faster, but I think those effects are not quite as desirable or useful as they could be.

I'm against increasing armor values, as heavy armor should not be made obsolete either, but lightening the weight or increasing other benefits of light armor could work. It could also be slightly easier to make and upgrade than it currently is.