Battery charge time
2 person operation
hdmi out
maintain flight in the event of motor failure
I was looking at keeping the features to the drone & what you get but perhaps I should add the battery charge time. Two person capability would suit the H and Inspire. HDMI out is an option on the Phantom 4. Maintain flight in the event of a failure is covered under HEX Failsafe.
I will add some of these to my next version, thanks!