One of the biggest complaints lobbed at Battlefield 6 so far is that its progression systems are painfully slow. In fact, I complained about it just yesterday, and how it could impact Season 1. Career ranks aren't too bad, but they currently gate progression for important assignments for new guns and gadgets. Weapon XP, on the other hand, is frustratingly slow, which has only exacerbated tensions around the random bullet deviation epidemic that even the best guns suffer from.
Thankfully, Battlefield Studios has answered our calls and is implementing a number of substantial changes to quicken the pace of progression: "Our goals here are to make the progression experience feel smoother and more rewarding while still keeping that sense of achievement when you complete a milestone like fully mastering a weapon." These changes were originally signalled to go live within the next week, but are surprisingly already being implemented across all platforms.
