http://www.pcgamer.com/epic-star-cards-and-most-battlefront-2-weapons-will-no-longer-be-loot-box-rewards/

EA has ceded some ground to Star Wars: Battlefront 2 beta players who were displeased with the progression system by announcing today that it's downgrading the importance of loot boxes. 

Most weapons in the Star Wars battler will now be unlocked by achieving "specific milestones," writes EA in a blog post, while only a "select few" will still be found in loot boxes. Additionally, class-specific crates will be given to players in return for playing as that class, so you're sure to progress in your chosen field of star warfare, rather than simply hoping that purchased crates give you stuff for your favorite class.