I like the idea of the aluminum keyboard with the multi-touch trackpad on the right side.
I would also like to see a mighty mouse whose top surface can be used as a multi-touch trackpad. No scroll ball. No side Buttons.
It will know when your palm is resting on it so it would provide regular two button mouse with scroll wheel features. Also if your hand is not resting on the mouse, you may use its top surface as a multi-touch enabled track pad like on the laptops.
I would pay good money for a mouse like this.
In my opinion...it is the only logical evolution of the migthy mouse. Just picture today's mighty mouse but with no ball or side buttons. Just one, smooth, unobstructed surface.
It would be cool if there was a light that would tell you when you are scrolling. Also instead of having touch sensitive areas to replace the side buttons, there should be a gesture area on the "palm" area of the mouse ... that area could behave identically to a laptop trackpad with multi-fingered gestures and all when the hand is not resting on it.
I think Apple should send me a job offer.
A Magic Mouse would be fine though really.