The recent update / DLC release has added some advanced features for helicopters. However, there is still no separate configurable key for collision lights.
On top of this, (ideally analogue) separate keys to enable and disable the different features (engine, collision lights, headlights, and wheel brakes) would allow those of us with two-state peripherals, like the trigger switches on the HOTAS Warthog, to properly configure our input devices within ArmA 3.
This is especially frustrating since ArmA 3 already recognizes these advanced peripherals, but for the two-state switches only allows mapping the "on"-state.
This makes those switches utterly useless, since you have to toggle them off and then on again just to get another key press