"I may be full of it, or just mistaken, but if you leave the wifi on on your gopro aren't you also likely to get a fly away. (I know this has been an issue with the DJI) The Wifi and the RC use 2.4 ghz.
"This is a very good question. It is my understanding that when it turns green and gets a lock where ever it is that becomes home. but if it is landing would it land 20' in the air and shut off?"