Yes. Since my post about skill progression is largely ignored I decided to instead add my 2 cents to already existing suggestions/requests.
This is a great idea. First of all, one great appeal in any sandboy game is exploration. LiF HAS TO feature a large map when it realeases so people can go and explore. But that means no preexplored map. So the ability to draw maps, mark information on them and trade those maps can be important. Also the writing/seals, etc can be really good for immersion. Also if religion gets a larger role, let's say you can form your own religion and gain bonuses, creating religious texts, runes, etc, or stealing those can be another layer of gameplay which benefits the game.
And if recipes/writs/plans/tomes of technique could get into the game (read my suggestion on the forums if you will) then again, writing coudl be important.
Also this would mean that someone has to produce the quils, paper and ink for these, yet another layer.
So in short, yes, yes and oh hell yes.