Weapon attachments unlocking, Can the developer please answer me?

I agree with the original post here. The grinding in this is taking way too long for casual players or someone who can't grind every single day. I play for a 2 hour stretch and barely make a dent in one weapon. I've only used a couple weapons because I've been working on them to try and rank up and I feel like I'm missing out on other guns, but I don't want to use them yet since they will have no unlocks. The weapon progression and over XP progression is very slow, especially compared to the beta. The pace of the beta was great!