Weapon progression

I've seen some posts about weapon progression beeing far to slow and it "hurts" causal players. I disagree, im a casual player and I think the progression is just fine. It takes time, sure, but hopefully we'll be playing this game for many years, and I don't want to unlock every attachment for every weapon in a week. 

So, Dice, imo, just leave it as is so we have something to work towards.