I think its time to adjust it and add more onto it. 

-Make up to tri gold acc drop. Harder to get then a duo drop then atm. However pri drop should be seriously buffed to be something you see every 10-20 hours fairly normally. While also making duo drop slightly better then now. Tri would be like duo drop but 25-40% harder to get compared to current drop rates. While pri will have 40% increase droping overall and duo just a mere 20%.

By having the ability to drop tri gold acc in group zones specialy and special deals we got a huge tresure source of silver down the road if we get carried. Im not saying to destroy the market in prices and such but lil buffs are the right direction.

Pri drop 1-20 hours

Duo 1-100 hours

Tri 1-500 hours

Rates like this seem fair honestly. Ofc this would be huge buff but thats fine stuff like this would make special deals even better and group grinding would be the shizz.

While were here add some more 3-5 man zones that drop good acc at fun rates to make special deals fire flames!