To be clear, the system I am proposing is meant exactly as a replacement for Karmic Dice. Default RNG stays intact. If someone had a good experience with default one then it's fine. If not, they have an alternative which guarantees that if you had some bad rolls then you will have good ones quite soon (and vice versa). This is at the price of having less ability to save-scum. But still, it is optional. I agree that "karmic" is a misnomer here, that would mean outcomes are depending of your past deeds in the game, and it does not work this way (nor is intended to).