Endgame Feedback

For me personally, the thing that's lacking from endgame is the "reason" to actually do it. I'm well aware there's plenty of self driven players that just enjoy grinding to improve their build etc, but personally, what i enjoy is working towards in game goals/challenges/achievements/reasons to do content and persist.

The PoE1 atlas has a very satisfying sense of completion with the 4/4 voidstones, the 115/115 completion of all maps, layered on top of this is the favoured map slots, plus the overarching 40/40 challenges. There's various systems giving a reason to actually play endgame and reward me with a sense of completion for my time. There's lots of things to unlock that provide meaningful and league long benefits to completing them.

I'd like to see:
- 40/40 Challenges of course.
- Some sort of map checklist like the PoE1 atlas? Where i have a reason to move around the infinite atlas trying to complete every available different map with some sort of league long atlas buff for completing them all at least once. (+1 all map levels / + x% rarity/quant to all future maps, atlas tree points etc)
- Something like a poe1 voidestone for first Arbiter kill that provides a league long buff to the rest of my mapping.

Tldr: Give me a reason to actually play endgame beyond *Must map to make build better*