I started recording my notes about the new elements of the game from the Wave 4 DLC. Not sure if they'll be of help to anyone, but if you want to contribute, feel free. All of them are incomplete
I've recorded data on Offer Item, Offer Renown, Liked Gifts, and Lost Items. What else should I record? Here's the link
If I'm wasting my time and there's a datamine out there that tells me all about this, please link it here.