You seems to be arguing for a sake of arguing. I said if "GPS lock fails"(on the drone), not if GPS fail, I know that GPS satelites do not fail! Anyway, we will have to agree to disagree on this Atti vs. Cruise Control discussion. It is becoming counterproductive.I was suggesting that Cruise Control adds some of the function that Litchi does, but it's nothing like Atti Mode.
I use it for videoing but more often, I use it to hitch a high speed ride on a tailwind when convenient.
Atti isn't something you can use as a rescue mode if GPS was to fail (GPS doesn't fail.)
Atti Mode is all you have left on any drone if GPS was to fail.
If you have a drone which does not have Cruise Control, Atti is great for what you are using it. Once you start using this new feature on M3 I am pretty sure that most of what you were using Atti for can be achieved with it, and that was all I was really trying to say here.
Happy flying!!