We have a Mavic 2 Pro for work and if you take time to set it up properly and familiarise yourself with the features, then they're pretty easy to use.Thinking of investing in a mavic pro. Anyone else got one?
As @longers mentioned, with the GPS function and all the sensors it posses then you can quite easily fly it at a distance and it will return back to your location.
You can even fly them beyond the range of the visible eye (either in height or simply distance away from you), but that's pretty frowned upon.
If you're looking at using them commercially then I would recommend going on a drone course (few hundred quid) as they'll soon become far more regulated.