I get why they have allowance restrictions on Leves so the system isn't abused. Especially for crafting and gathering since you can turn in A LOT in one go. I guess it is still there to prevent power leveling on those classes by just buying your way through classes on alternate toons and stuff. I think they might remove the allowances down the road at some point as leves are simply phased out but until then, it will be there as a bottleneck for the power levelers so you can do multiplayer content and the like.