Im sorry but this a long time coming. Leveling for all jobs except crafting with leve's is done freely and easily. Crafting requires way more additional cost, inventory space, and time compared to gathering and battle leves.
The current crafting level system, needs to get rid of "normal" items and adopt and system like the ixal crafting questline, where npc gives you items and has your crafting it. Normal and HQ outcomes would reward you.
By the way, cooking leve's are so ridiculous based on the sheer number of crafting items need to cook even simple recipes.