I've been thinking about the extra 1.3x crop. I've decided that other than the extra 1 frame per sec it's basically advertising doodoo. It is not giving you any kind of extra reach over the standard field of view the sensor already has. Cropping the frame or only using part of the sensor is no different that the crop tool in Photoshop. Now, if they figured out a way to use the whole sensor in the crop area, that'd be different and revolutionary.
Having said that, if the D300s derived autofocus really delivers over the D7000, that alone will probably get me to upgrade. The increased 3 to 5 frame bracket function is a bonus too.
Erich