I'm not sure if what I played through EA with was Karmic Dice or the weighted option from before, but personally it felt like it actually stacked things against me. I had built for fairly high AC but found that I was still getting hit a ton, and since my AC requires such higher hit rolls, I was getting crit a ton. Once I tried another playthrough with the option turned off, rolls suddenly felt a lot fairer and weren't punishing me for making a tanky character