>>723238146
>It had the potential and they fucked it up, twice
Those two fuck ups came from the fact the devs have no confidence and/or care to make their own game anymore. Looking at it cynically, Rain World never had any true traditional game design to it, which could be seen as on purpose, but likely was an accident in how well it came together. They said themselves that they put a lot of focus on placing creatures and giving them behaviours that made sense for an animal trying to survive, which did a lot to make the areas you explore feel like actual places instead of a curated platforming gamer challenge. And that worked out great for the base game, but I don't think they can/want to do that again given part of the new changes have been to add more QoL features that only really seek to break immersion and make the game more accessible for new players.
That's why the two new DLCs have just been the work of modders with miniscule and hand-wavey lore consultation from the main dev. He doesn't have confidence to make new areas (The Hunter was added in an update, and all he does is explore the same world with different spawns and a time limit), and likely doesn't want the current diehard fanbase to feel like the vision of the game has changed, so adding in what can explicitly be considered canon fanfiction, everyone can just handwave away that it doesn't fit the base game because it's not technically made by the main devs.
Realistically speaking, Rain World shouldn't have had DLC in the first place because, even ignoring the canonization of mods, expanding the world eventually leads to a point where they can't realistically tip-toe around important points of its history. Mysteries will effectively be solved, and the world will feel just that little bit smaller.