Modding and engine licensing could save this game, even though I don't think it's that far down the drain, and Hello, as a 15 people company, has probably already made a hefty profit off of it, allowing them to maybe get more people to work on it and deliver the product they advertised
It's like "but they told people right before launch that some features couldn't be implemented" and I say fuck this. When a game has so much hype, more casual gamers are not going to start subbing to reddits and checking back the news every fucking day to follow the project. If I'm a casual gamer and I see a guy on Stephen Colbert saying that in their game you can see other people and I think this is a great feature for immersion even though it has 00000.1% chance of happening, I'm not gonna check back one last time right before buying it to make sure everything they promised was still there, I'm a casual gamer, I assume it's gonna be there. Deliver on your promises or just talk less. Or don't be a criptic hipster about the fucking features of your game, the one point that will make people decide whether or not they want to buy it.
If they got their shit together and have dignity left, they won't focus on new projects and keep adding shit to this one, but they better start communicating it soon, because since launch they haven't adressed a lot of the things people complain about, even vocally.