I have no idea why they showed the volume lighting demo (the one with the nice super sharp shadows). I can't imagine they thought they'd make a game with rooms bigger than a closet with that style engine. The Xbox just isn't fast enough to do that (look what type of graphics card is needed to run Doom 3 decently at 640x480).
Not having Live co-op is a much bigger disappointment to me...
Not having Live co-op is a much bigger disappointment to me...