There was a change recently in crafting, where the extra bonus you could get from doing a first pristine combine made it unbalanced with leveling up certain crafters vs. others. Alchemists, jewelers, and sages could fly through the levels, but others just leveled so slowly because you only had a few pristine combines to make.
Since there was an obvious imbalance to leveling certain crafters a change this change was made, so why does this imbalance remain for ammo and poison users? Why should some classes have to "pay" for their DPS and debuffs? Yes, everyone can increase their character's skills by using potions, temp weapon adorns, food/drink, but the scouts have to use poisons and arrows/throwing. Yes, I realize that tanks also use ammo, but it's nothing like what the scouts are having to pay for their DPS and debuffs.
Fair and balanced, that is what ammo/poison users are asking for...
Rift did it right with rogues. Your class build gave you abilities to coat your weapons with various poisons. You had an endless quiver and never had to worry about arrows or bullets.