​[Feedback] Make Atlas Progression more Co-Op Friendly

Atlas progression is "Host-Centric" and guest players are effectively "mercenaries" who gain XP and loot but return to a stagnant Atlas of their own.

For Patch 0.5, I urge GGG to make endgame progression of the Atlas more co-op friendly. For example, guest players should receive credit for the completion and any associated Crystalline Cores alongside the host. Playing with friends should feel like a partnership, not a chore.