I wonder if we'll get to the point now where plugging in your new Macbook/Air/Pro into the mDP port on the iMac, effectively making your iMac display double as second display to the laptop, will allow you to flick the display back to its native iMac using Spaces or some other transition, whilst keeping your laptop as a second display to slide over to.
That would be neat, and I imagine just a software trick.
That would be neat, and I imagine just a software trick.