Depressing would be if Yilbegan could pop with a 0% chance to drop rings, but he didn't let you know via the fact he has no shadow. If every NM outright told you "Hey, 0% chance at that thing you want" or "Hey, 80% chance at that thing you want" every time you popped it, the game would be less depressing, not more depressing.
Imagine if ADL got changed to Yilbegan's loot forecasting system. 80% chance you get normal ADL who can't drop marrow, if he drops a sword, it's always talekeeper, and his skin is bright pink. 20% chance you get good ADL who drops 5-7 marrows, if he drops a sword, it's always sagasinger, and his skin is it's normal color. Would any ADL group complain about the ability to know immediately that it's simply not worth killing the pop they just farmed?
Drop rates will always be held back one way or another. Difficulty in killing the enemy, low drop rate, multiple drops required, one drop required but it's only useful when that drop item is HQ'd in its crafting recipe, etc. At least VNMs allow you to utilize knowlege to improve your farming efficiency. Yilbegan has no shadow? Ignore him and spend your time farming a new pop instead of foolishly killing an enemy who has a 0% drop rate.
So... which race of people makes the least repetitive and exhausting games?