I’m using these rules with descent pieces. Ive stripped the levels down to 4 levels, 3, 6, 10, 15 and round benefits to those levels. I’ve also streamlined the options available for stat buys. I just have the player buyer 1 additional stat bonus (vs stat value). All classes have a matrix of stat bonus that add up to 4. Player chooses a 5th one since I start at level 3.