Originally Posted by
Kallera
No, you've completely missed the point. You would meet and interact with more people if out of the crafting classes possible you can only master 1 to max. It gives their selected mastery value, because you will be needing that goldsmither, that tanner, for different forays and to help craft that level 75 gear you want.
If everyone was able to master crafting everything, like in your example, it makes establishing an economy's value more difficult, and DoH becomes more and more something cheapened. There will be more and more crab bows in the gutters of Uldah, and crafters would not be a persued commodity in linkshells. A crafter should have worth in the game, a knowledge of trade secrets, but not the ability to corner the whole synthing business.