As the title says, Farming for materials needed is *so* painful because the drop rates are SO LOW off of virtually every mob that has a drop that can also be purchased with bicolor gemstones. It's really, really demoralizing. For an actual, real world example, I had to take down 13-15 of a particular mob before seeing my *first* drop of an item. That's really not fair.

And for those who say "Just buy them with the gemstones" I still have special items (orchestrions, exclusive items etc) that I haven't finished picking up yet. even though I've fully finished rank 3 in both expansions with this feature.