A wider range would be better, but the product would certainly be more expensive. The wider the frequency range, the more difficult the RF design. Receiver technlogy in this band is very common and hence very cheap; I can't speak for transmitter technology, of course.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.