I promise I won't be a bit jealous of the 330d drivers. I'm sure it'll be a very nice and fast car but if it was downright pulling power I wanted I could have gotten the current M3, the RS4 or something else at a similar price as the new 330i.
However - for the ultimate in tactility and involvment few things beats a straight natural aspirated six. And a diesel will never sound like or rev like a proper gasoline engine.
And for the torque/hp debate. Torque is only good for in-gear accereration. The amount of horsepower you have is what really determines ultimate acceleration and top speed.
A 320d will not see which way a well driven 325 went.