I very much encourage you to get The Long Dark if you're a Stardew Valley. Sure enough, the two games have many differences, but the focus on resources, crafting mechanics and slow-paced gameplay are quite similar. Just be aware that the game will require you to kill animals, and the way it depicts killing rabbits is not for the faint-hearted.
The decision to release a large DLC was a risky decision for a small auteur studio which does everything to treat its employees well, but it's been going relatively well so far. The add-on is sold as a season pass which makes things more exciting because every two months we're getting another package with more content to explore. And sure, it's a proper DLC worth its price (if you like the base game, that is), not just another scam with a bunch of player skins and pay-to-win mechanics. I really hope more studios will follow the example set by the Hinterland Studios.