As existing celluar towers are updated, and new ones are erected to provide or improve service, I can see most of the LMR users migrate to the RF bands that will be interconnected between these towers.
I see the main effort will be to develope a way to manage site loading, when you have users travel away from the home area they talk onto the system, a remote area, and drag their talk-groups and not overload the traveled to areas RF channels.
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.