I would agree with others that it is kinda boring. You just run around and most of the time you can find 1 box in an hour and probably it won't have anything inside. There are zergs running around looking for boxes, sins and rangers in hide everywhere camping the boxes(Something that I also started doing with my alt because it makes sense). I can't do this solo with my main because there is always a sin that will kill the box faster then 2 regular classes, let alone 1. The reward is just not worth the grind imo. What I would change -> 1. Lower the respawn time of boxes by double at least. 2. Boxes take regular damage and have certain amount of HP. 3. Expand the area a bit so we don't have so many zergs.
Also if possible prevent empty boxes, there is nothing more annoying then opening an empty box. Make 1 thing 100% drop like l100, its not a big deal imo.