This is a dated topic but has been an issue in the MMRPGs I have played for some time. I see the first post was by a Progen Trader and though I don't know that profession, I'm guessing it's not much different than a Terran Trader. A Trader's job in combat is support, meaning they have their eyes and hands full nursing the team, watching everyone's condition even when the fight is over. Warriors can basically fire and forget and look after themselves. If they are doing their job well, Trader's are at a distinct disadvantage looting. While a warrior may want a rare item to equip, a Trader usually wants it to analyze. Letting a Trader have a rare item that will be destroyed and the analysis may fail is not appealing.
The only answer I ever found, no matter the game, was not to party with loot hogs. Then again, rare drops have a transforming affect.