If you removed the ability to trade items in anyway between players barring bop loot from group contents would anything in wow be lost?
If you do away with consumables and item enchants it feels like at least to me that nothing would really be lost.
It is rather rare that people buy gear beyond a way to sling shot alts ...
What do you think. With the multiple modes of difficulty and deterministic loot is the player economy a detriment or positive to the player experience.