It can't be 'too powerful' because you have the power to use it as well! The infinite range adds a nice balance to the game, imho. If you're facing problems with dealing with drones trying getting your own, or in the event you're losing to someone with a superior drone (happens alot in levels 10-25) try using energy-draining tactics or explosive/physical resistance modules
Can agree with it. Heat/rocket drones were very common -> resistant module and the drones output was drastically reduced.