Comment Mana-dependent character classes (Score 1) 520
In the original Diablo, only one of the three classes was strictly mana-dependent: the Sorcerer. The Warrior and the Rogue were dependent on other factors (primarily Health, and in the Rogue's case arrows), and could get away with paying little or no attention to mana.
In Diablo II, every single class was mana-dependent; all of them relied heavily on their active abilities, and all of those required mana. Ignoring mana would inevitably get you killed in fairly short order.
Warcraft III's heroes also tended to be mana-dependent (or so, at least, the "games built on top of War3" such as DotA seem to indicate), though perhaps not to the same extent, since those heroes were far from the only means of doing things in the game.
World of Warcraft has moved away from this somewhat, in that the (very differently designed) Warrior and Rogue now rely on Rage and Energy respectively, but it's still by and large a very mana-dependent game; ignoring mana will still get you very dead. For many classes this makes sense (Mage, Priest, Warlock, Shaman, Druid), but for others it doesn't necessarily fit as well; it's arguably also odd that intuitively mana-dependent classes so far outnumber ones which would not be.
Will Diablo III have any non-mana-dependent classes?