We all know the Battlepack system was created to lure players into not quitting a game by giving them a random chance of getting a useless skin, XP boost or puzzle weapon piece. Instead of adding the super rare skins into the mix, what if they were only available via challenges. If you want that super rare heavy tank skin you need 25 service stars, destroy 1000 tanks, or something along those lines. The same could be done with the gold weapon skins. Maybe with some skins there's a timer attached to the challenge, e.g. the duration of the current battlepack revision. Just spit balling ideas to generate some discussion.
Point I'm making is to try and add value or a sense of accomplishment to a game that has none. The entire scrap-pack system has always been a waste.