The people who started this game a year back or more they did not think about Extending the game then it was still the same it needs a big update or it must fall in to abandon this game is like a simulator kind of a game it just needs more work. I am not a Developer or anything like that but did the people who developed this game think about extending the game.
3D game development takes time. I'm amazed how some dudes made anything at all by themselves without any funding.
I'm also amazed that other dudes earn 10k or even 100k every month but can't really deliver anything.
To be honest, it's hard to find a 3D game that people consider that the development is going at a decent pace. (for example, Poolside Games). People got used to Visual novel development, which has it's own challenges, but it's way easier and faster than a 3D game.
About extending the game, many developers will fall into that trap. Even AAA developers like Bethesda. They will bite more than they can chew and deliver a shitty product. Also, don't expect AAA features in an indie game. Open world maps are on of those traps. They will often be empty and uninteresting.
I think developers should focus on using their community not only to get money, but also to improve the game. Many games have more custom than vanilla content, like VaM, Illusion games, Wildlife, etc. Trying to do everything on their own is an outdated and flawed strategy.