there have been many attempts before, but none of them have stuck the landing because they're all either early access, kickstarter promises, or ran out of money during development
the first one to actually have all the features people want, including the post-game - plus modding support - fully complete, playable, and fun on day one, that's the dream and an infinite money printer if it has Stardew Valley level post-launch support
yet somehow this dream seems unachievable by the current cadre of indie game devs, it might actually take a group of dedicated autists working on equal amounts of passion and spite for the monster tamer rpg genre and how its been treated since Pokemania