I doubt the reduction in the challenge level of the Icebrood Saga has anything to do with some kind of "data". The way they market it and talk about it it's as if they want players to start with the Icebrood Saga and skip the rest of the game, which is understandable that's where all the old players will be. So this massive drop is there to better introduce players to the game with an extended tutorial. Where this kind of fails is that Path of Fire, the expansion required to play the Icebrood Saga, has higher difficulty fights than the Saga, as if telling players to skip even the expansion and go directly for the Season. It's a weird choice and I don't see it in any way being done for player retention, if someone finds Path of Fire too hard they'll leave already before touching the Saga, and those that liked the level of difficulty in Path of Fire will be confused at the massive drop in the Saga. Overall it's a weird choice and reminds me of Ember Bay, the second episode of Season 3 which was a joke difficulty-wise. And judging by Anet not doing another Ember Bay afterwards they got the data on how good that episode was for player activity and retention. Well said. I can understand where you're coming from with this analysis. Interesting perspective on it. Thanks for sharing. :)