This class should craft books (I'm experienced in book-making)
My father owns a family business in handmaking books, so I know what making a book from raw materials looks like.
And if my dad and his business could be summed up into one FFXIV DoH class, it would most definitely be leatherworking.
There most definitely SOME weaving involved (sewing together the text blocks, and making the headbands), as well as some goldsmithing (making gilded designs, fancy corners, clasps, etc.)
But 90% of the time he will be working with the leather. The cover is really the most important part of making a book, and therefore, that's why I think leatherworking should make the books (and maybe goldsmith should upgrade some).
And it would probably be about time that leatherworker got to make some weapons.
(And I'm not being biased here, look at my sig. I don't even do leatherworker myself)