It's horrible. You can run Legend in 1-3 minutes for 30 runs and maybe get one exotic, or you can run one Master in 10 minutes 15 times for an exotic. If an exotic hasn't been unlocked yet, make it a guaranteed drop on Legend. I don't give a -blam!- if it has 30 base stats or it's the same roll as grabbing from collections, I just want it so I can start rolling it at Xur or from any other source. Whatever muppet designed these worked for DE on Warframe before being hired at Bungie, cause it's the same -blam!- -blam!- as farming warframe or weapon blueprint parts. Completely terrible ratio of time-to-satisfaction just to get player metrics.