This is probably the only actually meaningful thing I read in this whole thread. Leave shit as it is and make ways to counteract the bad luck people may have. It would be great if it spreads to the whole game. I would even go as far as say it would fix most of the problems in the game if you can add it to sockets, any uncontrollable item enhancements such as TF or corruption, vanity items.
- - - Updated - - -
Crafting should never be a viable alternative to raiding and dungeons. If you incorporate it to be able to create viable items in every slot through clearing the raid enough times on the corresponding difficulty, sure. An MMORPG is not a solo game and should therefore not reward solo play equally to group play.
Also, trading everything would most likely break the economy.