With the default Karmic Dice enabled I got the feeling that my chars hit too often, that AC does not matter that much and control spells are a waste. Some tests made by some players seem to confirm that you get more higher dice numbers than random throws would allow. That's the same for the AI but the player can deal a lot better than AI with the fast high damage gameplay that results. Not fair.
After disabling the Karmic Dice I got the feeling that AC does matter more and the AI and I get more misses. It seems to resemble better that TT idea behind the rules and I like that more because it's more balanced. Some rows of misses while a bit annoying at first glance are acceptable and totally explainable by randomness.