Congratulations, Paizo. You've provided reason to single-class in any of the 4 core classes you presented. I can totally picture playing a fighter. Not a fighter X/PrC1 Y/PrC2 Z, but a fighter 20. A feat every single level, butt-kicking class abilities, and combat feats. The problem is, I also want to play a wizard 20, a cleric 20, and a rogue 20 now, too. How cool must it be to reach level 20 as a transmuter or a diviner? I'm still vehemently opposed to the loss of skill points (I won't skip buying the product over it if it stays, but you can bet your firstborn I'll houserule it back), but for the most part, let's go.