Subclass system. Look I know it's hard but. Something I never forget. And that in my opinion was the best character progression system. Because you value your character and always want and enjoy playing with your main character. It was the subclass system of Lineage II is amazing. Seeing as RPG rules. Nothing prevents you from being a wizard and raising your potential to the maximum and learning another class. Like a rogue or priest for example. And start evolving that class from scratch. Without losing the value of your main character. This in my opinion is a way to play as you want. Or like Guild wars 1. You have your main class but choose skills from another class to complete your rules. Sorry my bad english.