Poll: What's your Zune 4.0 must-have?

Now that the dust has settled on Microsoft's impressive, if not quite revolutionary, Zune 3.0 update, it's time for us all to do what we do best: start demanding a new version of desktop and player software -- and a hardware refresh, of course -- chock-full of features that we've been asking for since day one, and a few things we dreamed up along the way. Pick your top-priority from the poll below, or just go nuts in the comments -- the floor is yours.
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