I'm also reconsidering Padded Armor. Quite honestly, it should have the most AC of the Light Armors but have the Dex restrictions and Disadvantages. Padded Armor is/was more protective than Leather, but a Dextrous person WOULD benefit more from Leather because they are more agile.
Also, I'm wondering if Shove should be an exception to Athletics Disadvantage because it is something that would benefit from you having more weight, not less.