You don't get more reach with a cropped sensor, reach is determined by the focal length of the lens, the image size is the same, what is different is the sensor size. To use a math analogy, the numerator stays the same, the denominator is reduced, which leads to the misconception that you are getting more reach with cropped sensors. It's an illusion that it is bigger, it's not bigger, just looks bigger as it takes up more space on a smaller sensor. When you think about it logically, obviously it isn't actually any closer, and the lens doesn't have any more reach, that dirty little misconception figured into some of early digital purchases. The benefit of the the 7D was the dual Digic processors, with one dedicated to AF, like the 1DX.
Personally, I don't know why they continue to make cropped sensors, in a contracting market, one would think less R&D and the economy of scale would out weigh the costs savings of producing a smaller sensor, I guess not. Not sure why they continue with the Rebel series, seriously, why not get that target population into an RP/RF format?