I may be mistaken, but, since the 1.0.5 patch, the drop rate on ethereal reagents (specifically Erieban Tears) seems to all but disappeared. They do still drop, but the rarity of those drops seems a bit extreme. Reagent attrition limits the experimentation/modification of drops with potential to be better for one's build. Granted, the occasional Seeker project comes up to provide a random legendary reagent, but it is more the common, non-legendary reagent that seems to be MIA. Need to experiment with those decent yellow drops to get them worthy of legendary conversion after all.

Hoping to hear official word on this (actually, hoping to hear official commentary and state-of-the game info in general... all too quiet imo.)

Cheers.