...yes?

Running 200k nightfall’s are a waste. You can speed run the nightfall in about 8 minutes with solar, heavy, and momentum. I did about 20-25 nightfall’s and got 6 mindbenders. Doing a whole 200k nightfall isn’t worth it.

I did the 200k because of Solstice masterwork requirement, and I knew about the increased rates for nightfall-stuff so that’s the only reason why I chose The Hallowed Lair. Seemed like a win-win.

Increased score dont have anything to do with drop chance I don't think. There is nightfall drop protection for nightfall rewards.

Nightfall Par Scores Update In Destiny Update 1.1.3, we introduced Nightfall emblem variants. As the new Legendary Nightfall Challenge Card will give players more ways to increase their scores, we’re increasing the par scores required to earn specific rewards. Emblem variants, auras, and token reward bonus par scores have been updated to the following: 30k 60k 110k 200k [b]As a reminder, when you reach new record par scores for a specific Nightfall, you increase your chances to earn the associated Nightfall Unique Reward![/b] We’ll be watching community scores closely once Update 1.2.0 is released, and we’ll let you know if any adjustments need to be made.