make an npc that allow player to craft dual class equipment that has blue rare effect on it
here is my suggestion for doing that
1.make an npc
2.ask for 3 dual class equipment (like 3 seigolaid sword or 3x aura isuka bow)to craft a g1,maximum 8 g1's per day
3.pay 50 or 100 fame to the npc to create an g1,players able to select the group of rare they wish to craft
4. make another npc that combines crafted dc equipment by paying them fame or dual fame