I have a Dream. I have a dream of the world,when one person can learn only few recipes...

I am leathercrafter. I can get starting recipes from other craftings. But i get no recipes, I have only 10 in each tree. I get them only in leathercraft. When I master my leathercrafting skill i get only 30 recipes. 5 basics, 2 sets of clothes, and 5 random.
If this would happen, there will be economy. Toolcrafter will need other one to give him a screwdriver because he cant learn how to make it. etc.

What do you think about this?