Li Shenron
Legend
Yes but I would rather have the dynamic function be applied through feats rather than classes. If you want to dip into another class's features that should be feats. If you want to be a fighter/mage that should be something done at character generation. Then feel free to dip into rogue with some feats, if you want to pick up some rogue later in your career. This would dramatically simplify the level up system. Is simplifying the level up system needed?
I can also buy the "dual-class" multi-classing method as an option. Actually it might be nice to have both the dual class and multi-class systems be included as optional. The feats to pick up other classes class features though, in my mind that is integral to the game and should not be considered optional.
Would you consider letting a feat grant a whole level of another class balanced, unbalanced, or plain too weird?
In the first case, would you let it grant levels only strictly in order, or would you let it "pick" higher levels (tho spellcasting would be a problem this way) up to your total character level?