Have you not met Dolus? The story has already included a former demon king who was murdered by the hero in the real world. It didn't kill him in Roya and now he's stuck there. He's been there for a thousand Royan years. Time seems to pass differently to the real world when there's no active hero/demon king plot. A lot of the story complaints in this thread are generally covered in some capacity. Whether it be the option of killing Richard in reality, George/Rose figuring out something is wrong and teaming up (they do) or even Richard pretending to be nice, which he does with Rose. He wouldn't do that with Aura though, because it's not victory he ultimately craves, he enjoys the hunt/the competition. Ironically meaning he likes Aura more as herself than almost anyone. I wouldn't be surprised if the star shine good ending is making Richard realize he just enjoys peoples true selves in some capacity. Another story element that seems to be getting covered imo is the likelihood that the 'goddess' is a demon herself, the most powerful. Aura and Richard share the ability to absorb power from others because they're both contracted to the goddess. Being so powerful, it takes her a long time to recover in her domain, and her contracts are powerful. Additionally, Alicia's gift is the same as a former hero and was granted by the goddess. I suspect at some point Aura will be confronted with the reality that her actions have been hastening the restoration of the demon goddess, not dissimilar to KH2 when Sora has to grapple with the idea of the organization claiming the hearts he frees.
Obviously it's on the dev to tie all these elements together, but most of them have been getting addressed.