Possible improvement

Stable fixation.
One regret is that the cross strap from the forehead to the neck should be removed to get to a less penalizing system (Petzl style for the front lamps.
Indeed, the Petzl style lamps offer a simple strap that surround the head horizontally and this is very convenient for people who sleep with (eg fishermen, hunters ...) and they are very convenient because you just belittle around the neck which the gene nothing sommeil.i