Craft leveling requiring Master III books

[Gunspec]

The masterbook3s were meant to be obtained and used at level 56.
Hence y ur level 60 job quest requires a masterbook3 recipe.

Yeah, but lets say you just hit 56, and finally have access to the earliest blue script collectable turn in. You now need 360 scripts to get the book. You will gain a minimum of 3.12 million xp turning in the items for those scripts, an extra 650k xp for having crafted those turn ins, and easily 1-2 million xp for crafting the materials to make the turn-ins.

Factor in any GC turn ins you may have done in this time, any levequests that caught your fancy, and additional gear you might have crafted, any script items that you failed to raise to a high enough collectablity...

You'll be sitting at level 58-59, and still not have the masterbook. *points at self

The old level 50 quests required you to make 1-star items with a materia melded to it. These final crafting quests are meant to be the introduction to "end-game" crafting. The level 45 levequests were not like that, and even the level 50 GC turn-ins never required you to make anything more complex than a raptor belt or a rosewood weapon.