I see the bluetooth mice pointless at this time, I mean sure it would be nice to get rid of those cords, but the reliability of the mouse comes into question with batterys, recharging, other devises that are requesting at the same bandwidth not just including other bluetooth devises (I would hate to think if I was next to a microwave); all for a devise that should, "Just Work", until this reliability is solved, and the usefulness of being wireless is solved being that I'm not often going to move my keyboard or mouse that often across a room and it usually just sits there right next to comp. I had might as well just use a cord.
Now Apple needs to offer a scroll wheel on their mice, it is one flaw that needs to be fixed. Personally, (you can throw fish if you like to) I think a jogger, like on an iPod, would be great to add to a Apple branded mouse. You know how easy it is to move threw thousands of songs on the iPod wouldn't be great to move like that on your computer? Plus it would have .added functionality to iMovie and FCP.
I see it like like this: teardrop design for leftys and rightys, a jogger w/ button in middle like on iPod and two buttons to the left and right of the mouse. The center button would keep up the ideal of "One Button Rules All" pinceable by Apple and easier to understand by newbs, and the two buttons could be user defined for control-clicking or other things.
What do you think?