Shadowbringers Relic: Overworld as "Eureka"

[Seraphor]

I would prefer honestly some fusion of ARR/HW and SB

Where it is part of the overworld maps we have, but remove it being reliant on crafting and desynth. Tie it to the new fate system, ShB treasure maps, hunts.

They have said that they want to try and do something that's a 'happy medium'.
I can't help but feel that the only way to do this, would be to have some instanced area like Eureka, but have access to it, or to progression within it, linked to openworld content like FATEs.
Perhaps access requires bicoloured gemstones, or rank 2 gemstone items or something.
This additional gatekeeping would then warrant a partial nerf in grinding intensity within the instanced area.

If they did this, then the next 'Baldesian Arsenal' could be gated behind the initial mechanic of gemstones or something, instead of all that faff of spawning certain FATEs in Eureka and activating portals.