So I've been playing around in beginner mode, and this thing flies like a dream.  But looking through the menus on the phone they are not always intuitive.  To help improve the APP and the ability of fliers, I have a few suggestions.
First there should be a video the settings in the APP.
In beginner mode there should be a tutorial stage to go through all the settings to make it easier to find things, as the manual explains a lot of things it does not go through all the options.  Also you should be able to toggle different settings in a test mode.  The reason I suggest this is when opening up the APP, there is a lot of information presented and it can be an overload for people.  When you go into some settings it takes the full screen up, and others only takes half the screen.

Good suggestion, if you look at YouTube there are several videos on app settings.
If you subscribe to DJI's channel they add videos all the time.
This one goes through some of the app features.

How about DJI implements a password system for the drones to prevent unwanted users taking off or if the drone is lost its Federer useless.