Yes, most people still want a high density sensor for 'reach' applications. And partly also for cost.
But what if the 7D successor moved up the ladder and became a APS-H, with compatibility to EF-S lenses ?
And kept the pixel density at about 12-16Mp instead for APS-C crop ?
Wouldn't that make for a very appealing camera if it kept all the bells and whistles of the orignal 7D and add a Digic V processor? In the process (mainly due to US$ to Yen exchange rates), price moves to about US$2200.
Sorry but no, EF-S lenses are designed for APS-C sensors and can not be used for larger sensors. EF-S lenses extend further into the body therefore the larger mirror on an APS-H or FF would hit the back of the lens. EF-S lenses also produce a smaller image circle designed to cover an APS-C sensor only.