I guess no one has seen this yet, but there is a huge change to interdependency coming, probably. It's on the test server now. This is the official post:
http://eqiiforums.station.sony.com/eq2/board/message?board.id=tup&message.id=17#M17
This is the relevant item:
Quote:
Four new crafting abilities have been discovered: apothecary, weaving, timbercraft, and geomancy. These skills allow all artisans to refine the materials and components needed to make final products. New recipe books can be found on merchants or scattered throughout Norrath which teach you how to use these skills. Artisans automatically gain 5 points per level in these skills.
This does indeed mean that all tradeskill classes can make their own subcombines to create their final products. I haven't personally seen anything regarding the relative quality of these items compared to that of the same item made by the specialist class.