I can see it working as some sort of third-person "fantasy" Rust-type game with servers resetting every so often. But it's honestly still in such an early state that it's impossible to tell really what their end goal is. Or at least I
hope it's still in an early state. But Rust was arguably one of the biggest uniters of Hololive branches, and having their own official version where the members could even have actual input in how it evolves could be a huge boon to Hololive Members, viewers, and people who just want to play the game.
This is all just hypothetical though.