Just as happened with the "aeroplanes" in WW One it seems the drones are being split between intelligence/surveillance craft and fighter/interdiction craft.  The next step is high-payload bombers, and I'll bet someone, somewhere, is already working on them.

With the US B-52 fleet of heavy bombers becoming overworked and tired I that "somewhere" is "here."

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre