The reason Apple dropped the MagSafe charger in the new MacBook might be because they're planning to replace it with something better. Look at this picture again. The only free space seems to be around the trackpad. That could be where they are planning to place an inductive charging coil. When you think about it, that would be the easiest part of the laptop to line up with some sort of charging mat. I know inductive charging doesn't carry well through a metal casing. But neither does visible light, and they still managed that with the 'sleep' LED. So who's to say that they can't make the metal super-thin for that part of the casing so it lets through the charge, but still looks like metal? Needless to say, it would be proprietary and incompatible with non-Apple products, like MagSafe all over again.