What I think would be cool is subtle classifications of each class. Meaning this: If I had a fighter that's specific weapon expertise included a halberd or a spear or something like that he'd be called a Man-at-Arms. A thief, that can sneak and use daggers in a high degree would be some sort of assassin, so forth. Ultima Online used this method and even though it changed nothing in the game, it gave it that much more depth in character development. Basicallt depending on what type of magic you use, or weapons or other skills you possess. Elemental mages would rock also.
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Can an elf get a break anywhere these days?