Primal Leg Reinforcements
If you recently leveled leatherworking prior to Patch 5.0.4, you might want to check your recipe book again.
About two months ago I decided to drop one of my two gathering professions for a crafting profession. I decided then to choose the standard skinning–leatherworking combination to benefit from the extra agility in the bracer enchant.
However, I didn’t bother replacing [Dragonscale Leg Armor] with the leatherworking enchant because I had already been using the heroic Tier 13 leggings for quite some time. The enchant provided the same benefits of +190 Attack Power and +55 Critical Strike, so I skipped the extra effort and materials.
When I checked after the patch, however, the leatherworking enchant had been converted to Primal Leg Reinforcements, which provides +95 Agility and +55 Critical Strike. On the surface, it looks equivalent to the old version because, for hunters, 1 Agility is equivalent to 2 Ranged Attack Power. However, the 95 Agility also provides some Critical Strike bonus, edging out the crafted leg armor in DPS value.
So if you haven’t already, switch your leggings enchant now. It will only cost you an easily obtainable Eternium Thread.