You could assign the C1 button to it, but the app gives the best visual determination of the current setting and the two alternatives, unlike the button method that requires cycling through the settings to get the one you want, often involving turning it ON, to turn it OFF!
The light is very handy if you lose sight of the drone or are trying to help someone else see it.
For me it's c2, I actually end up using it more in the air then close to the ground. I rapidly switch modes and that makes it flash which helps spotting it.
In such cases it's a PITA, but at least you can still get to it through DJI Fly, right?
That Auto setting is the worst for hand catching at night. Immediate night blindness, just when you need every bit of your vision for safe hand catching! I immediately turn Auto to Off upon launching at dusk. If I can't immediately locate the drone in the sky for landing, I turn it back On to locate it, and then immediately turn it Off again while flying it back for the hand catch. The few times I had mistakenly had it in Auto for landing were regretful!
More like landing after dark, rather than night flying, per se. With 30+ minute flight times now a reality, launching just before or at sunset often results in a nocturnal landing. Even if not hand catching after dusk, if landing manually, you still want to turn it off, or be far enough away from yourself so as not to be night blinded, once it descends to 15 feet, and turns on.
